forked from OSchip/llvm-project
1704 lines
64 KiB
C++
1704 lines
64 KiB
C++
//===- ASTStructuralEquivalence.cpp ---------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implement StructuralEquivalenceContext class and helper functions
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// for layout matching.
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//
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// The structural equivalence check could have been implemented as a parallel
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// BFS on a pair of graphs. That must have been the original approach at the
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// beginning.
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// Let's consider this simple BFS algorithm from the `s` source:
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// ```
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// void bfs(Graph G, int s)
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// {
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// Queue<Integer> queue = new Queue<Integer>();
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// marked[s] = true; // Mark the source
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// queue.enqueue(s); // and put it on the queue.
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// while (!q.isEmpty()) {
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// int v = queue.dequeue(); // Remove next vertex from the queue.
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// for (int w : G.adj(v))
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// if (!marked[w]) // For every unmarked adjacent vertex,
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// {
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// marked[w] = true;
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// queue.enqueue(w);
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// }
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// }
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// }
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// ```
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// Indeed, it has it's queue, which holds pairs of nodes, one from each graph,
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// this is the `DeclsToCheck` and it's pair is in `TentativeEquivalences`.
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// `TentativeEquivalences` also plays the role of the marking (`marked`)
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// functionality above, we use it to check whether we've already seen a pair of
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// nodes.
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//
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// We put in the elements into the queue only in the toplevel decl check
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// function:
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// ```
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// static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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// Decl *D1, Decl *D2);
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// ```
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// The `while` loop where we iterate over the children is implemented in
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// `Finish()`. And `Finish` is called only from the two **member** functions
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// which check the equivalency of two Decls or two Types. ASTImporter (and
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// other clients) call only these functions.
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//
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// The `static` implementation functions are called from `Finish`, these push
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// the children nodes to the queue via `static bool
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// IsStructurallyEquivalent(StructuralEquivalenceContext &Context, Decl *D1,
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// Decl *D2)`. So far so good, this is almost like the BFS. However, if we
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// let a static implementation function to call `Finish` via another **member**
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// function that means we end up with two nested while loops each of them
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// working on the same queue. This is wrong and nobody can reason about it's
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// doing. Thus, static implementation functions must not call the **member**
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// functions.
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//
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// So, now `TentativeEquivalences` plays two roles. It is used to store the
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// second half of the decls which we want to compare, plus it plays a role in
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// closing the recursion. On a long term, we could refactor structural
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// equivalency to be more alike to the traditional BFS.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ASTStructuralEquivalence.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/ASTDiagnostic.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclBase.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclFriend.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/AST/DeclTemplate.h"
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#include "clang/AST/NestedNameSpecifier.h"
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#include "clang/AST/TemplateBase.h"
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#include "clang/AST/TemplateName.h"
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#include "clang/AST/Type.h"
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#include "clang/Basic/ExceptionSpecificationType.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/LLVM.h"
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#include "clang/Basic/SourceLocation.h"
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#include "llvm/ADT/APInt.h"
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#include "llvm/ADT/APSInt.h"
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#include "llvm/ADT/None.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <cassert>
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#include <utility>
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using namespace clang;
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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QualType T1, QualType T2);
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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Decl *D1, Decl *D2);
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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const TemplateArgument &Arg1,
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const TemplateArgument &Arg2);
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/// Determine structural equivalence of two expressions.
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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const Expr *E1, const Expr *E2) {
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if (!E1 || !E2)
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return E1 == E2;
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// FIXME: Actually perform a structural comparison!
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return true;
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}
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/// Determine whether two identifiers are equivalent.
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static bool IsStructurallyEquivalent(const IdentifierInfo *Name1,
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const IdentifierInfo *Name2) {
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if (!Name1 || !Name2)
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return Name1 == Name2;
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return Name1->getName() == Name2->getName();
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}
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/// Determine whether two nested-name-specifiers are equivalent.
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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NestedNameSpecifier *NNS1,
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NestedNameSpecifier *NNS2) {
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if (NNS1->getKind() != NNS2->getKind())
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return false;
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NestedNameSpecifier *Prefix1 = NNS1->getPrefix(),
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*Prefix2 = NNS2->getPrefix();
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if ((bool)Prefix1 != (bool)Prefix2)
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return false;
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if (Prefix1)
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if (!IsStructurallyEquivalent(Context, Prefix1, Prefix2))
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return false;
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switch (NNS1->getKind()) {
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case NestedNameSpecifier::Identifier:
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return IsStructurallyEquivalent(NNS1->getAsIdentifier(),
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NNS2->getAsIdentifier());
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case NestedNameSpecifier::Namespace:
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return IsStructurallyEquivalent(Context, NNS1->getAsNamespace(),
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NNS2->getAsNamespace());
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case NestedNameSpecifier::NamespaceAlias:
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return IsStructurallyEquivalent(Context, NNS1->getAsNamespaceAlias(),
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NNS2->getAsNamespaceAlias());
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case NestedNameSpecifier::TypeSpec:
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case NestedNameSpecifier::TypeSpecWithTemplate:
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return IsStructurallyEquivalent(Context, QualType(NNS1->getAsType(), 0),
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QualType(NNS2->getAsType(), 0));
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case NestedNameSpecifier::Global:
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return true;
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case NestedNameSpecifier::Super:
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return IsStructurallyEquivalent(Context, NNS1->getAsRecordDecl(),
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NNS2->getAsRecordDecl());
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}
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return false;
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}
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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const TemplateName &N1,
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const TemplateName &N2) {
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if (N1.getKind() != N2.getKind())
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return false;
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switch (N1.getKind()) {
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case TemplateName::Template:
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return IsStructurallyEquivalent(Context, N1.getAsTemplateDecl(),
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N2.getAsTemplateDecl());
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case TemplateName::OverloadedTemplate: {
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OverloadedTemplateStorage *OS1 = N1.getAsOverloadedTemplate(),
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*OS2 = N2.getAsOverloadedTemplate();
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OverloadedTemplateStorage::iterator I1 = OS1->begin(), I2 = OS2->begin(),
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E1 = OS1->end(), E2 = OS2->end();
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for (; I1 != E1 && I2 != E2; ++I1, ++I2)
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if (!IsStructurallyEquivalent(Context, *I1, *I2))
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return false;
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return I1 == E1 && I2 == E2;
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}
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case TemplateName::QualifiedTemplate: {
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QualifiedTemplateName *QN1 = N1.getAsQualifiedTemplateName(),
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*QN2 = N2.getAsQualifiedTemplateName();
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return IsStructurallyEquivalent(Context, QN1->getDecl(), QN2->getDecl()) &&
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IsStructurallyEquivalent(Context, QN1->getQualifier(),
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QN2->getQualifier());
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}
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case TemplateName::DependentTemplate: {
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DependentTemplateName *DN1 = N1.getAsDependentTemplateName(),
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*DN2 = N2.getAsDependentTemplateName();
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if (!IsStructurallyEquivalent(Context, DN1->getQualifier(),
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DN2->getQualifier()))
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return false;
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if (DN1->isIdentifier() && DN2->isIdentifier())
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return IsStructurallyEquivalent(DN1->getIdentifier(),
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DN2->getIdentifier());
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else if (DN1->isOverloadedOperator() && DN2->isOverloadedOperator())
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return DN1->getOperator() == DN2->getOperator();
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return false;
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}
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case TemplateName::SubstTemplateTemplateParm: {
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SubstTemplateTemplateParmStorage *TS1 = N1.getAsSubstTemplateTemplateParm(),
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*TS2 = N2.getAsSubstTemplateTemplateParm();
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return IsStructurallyEquivalent(Context, TS1->getParameter(),
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TS2->getParameter()) &&
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IsStructurallyEquivalent(Context, TS1->getReplacement(),
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TS2->getReplacement());
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}
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case TemplateName::SubstTemplateTemplateParmPack: {
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SubstTemplateTemplateParmPackStorage
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*P1 = N1.getAsSubstTemplateTemplateParmPack(),
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*P2 = N2.getAsSubstTemplateTemplateParmPack();
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return IsStructurallyEquivalent(Context, P1->getArgumentPack(),
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P2->getArgumentPack()) &&
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IsStructurallyEquivalent(Context, P1->getParameterPack(),
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P2->getParameterPack());
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}
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}
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return false;
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}
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/// Determine whether two template arguments are equivalent.
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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const TemplateArgument &Arg1,
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const TemplateArgument &Arg2) {
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if (Arg1.getKind() != Arg2.getKind())
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return false;
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switch (Arg1.getKind()) {
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case TemplateArgument::Null:
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return true;
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case TemplateArgument::Type:
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return IsStructurallyEquivalent(Context, Arg1.getAsType(), Arg2.getAsType());
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case TemplateArgument::Integral:
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if (!IsStructurallyEquivalent(Context, Arg1.getIntegralType(),
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Arg2.getIntegralType()))
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return false;
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return llvm::APSInt::isSameValue(Arg1.getAsIntegral(),
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Arg2.getAsIntegral());
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case TemplateArgument::Declaration:
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return IsStructurallyEquivalent(Context, Arg1.getAsDecl(), Arg2.getAsDecl());
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case TemplateArgument::NullPtr:
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return true; // FIXME: Is this correct?
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case TemplateArgument::Template:
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return IsStructurallyEquivalent(Context, Arg1.getAsTemplate(),
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Arg2.getAsTemplate());
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case TemplateArgument::TemplateExpansion:
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return IsStructurallyEquivalent(Context,
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Arg1.getAsTemplateOrTemplatePattern(),
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Arg2.getAsTemplateOrTemplatePattern());
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case TemplateArgument::Expression:
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return IsStructurallyEquivalent(Context, Arg1.getAsExpr(),
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Arg2.getAsExpr());
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case TemplateArgument::Pack:
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if (Arg1.pack_size() != Arg2.pack_size())
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return false;
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for (unsigned I = 0, N = Arg1.pack_size(); I != N; ++I)
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if (!IsStructurallyEquivalent(Context, Arg1.pack_begin()[I],
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Arg2.pack_begin()[I]))
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return false;
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return true;
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}
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llvm_unreachable("Invalid template argument kind");
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}
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/// Determine structural equivalence for the common part of array
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/// types.
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static bool IsArrayStructurallyEquivalent(StructuralEquivalenceContext &Context,
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const ArrayType *Array1,
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const ArrayType *Array2) {
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if (!IsStructurallyEquivalent(Context, Array1->getElementType(),
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Array2->getElementType()))
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return false;
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if (Array1->getSizeModifier() != Array2->getSizeModifier())
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return false;
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if (Array1->getIndexTypeQualifiers() != Array2->getIndexTypeQualifiers())
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return false;
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return true;
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}
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/// Determine structural equivalence based on the ExtInfo of functions. This
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/// is inspired by ASTContext::mergeFunctionTypes(), we compare calling
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/// conventions bits but must not compare some other bits.
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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FunctionType::ExtInfo EI1,
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FunctionType::ExtInfo EI2) {
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// Compatible functions must have compatible calling conventions.
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if (EI1.getCC() != EI2.getCC())
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return false;
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// Regparm is part of the calling convention.
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if (EI1.getHasRegParm() != EI2.getHasRegParm())
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return false;
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if (EI1.getRegParm() != EI2.getRegParm())
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return false;
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if (EI1.getProducesResult() != EI2.getProducesResult())
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return false;
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if (EI1.getNoCallerSavedRegs() != EI2.getNoCallerSavedRegs())
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return false;
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if (EI1.getNoCfCheck() != EI2.getNoCfCheck())
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return false;
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return true;
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}
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/// Determine structural equivalence of two types.
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static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
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QualType T1, QualType T2) {
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if (T1.isNull() || T2.isNull())
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return T1.isNull() && T2.isNull();
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QualType OrigT1 = T1;
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QualType OrigT2 = T2;
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if (!Context.StrictTypeSpelling) {
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// We aren't being strict about token-to-token equivalence of types,
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// so map down to the canonical type.
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T1 = Context.FromCtx.getCanonicalType(T1);
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T2 = Context.ToCtx.getCanonicalType(T2);
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}
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if (T1.getQualifiers() != T2.getQualifiers())
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return false;
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Type::TypeClass TC = T1->getTypeClass();
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if (T1->getTypeClass() != T2->getTypeClass()) {
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// Compare function types with prototypes vs. without prototypes as if
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// both did not have prototypes.
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if (T1->getTypeClass() == Type::FunctionProto &&
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T2->getTypeClass() == Type::FunctionNoProto)
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TC = Type::FunctionNoProto;
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else if (T1->getTypeClass() == Type::FunctionNoProto &&
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T2->getTypeClass() == Type::FunctionProto)
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TC = Type::FunctionNoProto;
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else
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return false;
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}
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switch (TC) {
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case Type::Builtin:
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// FIXME: Deal with Char_S/Char_U.
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if (cast<BuiltinType>(T1)->getKind() != cast<BuiltinType>(T2)->getKind())
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return false;
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break;
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case Type::Complex:
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if (!IsStructurallyEquivalent(Context,
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cast<ComplexType>(T1)->getElementType(),
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cast<ComplexType>(T2)->getElementType()))
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return false;
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break;
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case Type::Adjusted:
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case Type::Decayed:
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if (!IsStructurallyEquivalent(Context,
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cast<AdjustedType>(T1)->getOriginalType(),
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cast<AdjustedType>(T2)->getOriginalType()))
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return false;
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break;
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case Type::Pointer:
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if (!IsStructurallyEquivalent(Context,
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cast<PointerType>(T1)->getPointeeType(),
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cast<PointerType>(T2)->getPointeeType()))
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return false;
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break;
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case Type::BlockPointer:
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if (!IsStructurallyEquivalent(Context,
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cast<BlockPointerType>(T1)->getPointeeType(),
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cast<BlockPointerType>(T2)->getPointeeType()))
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return false;
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break;
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case Type::LValueReference:
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case Type::RValueReference: {
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const auto *Ref1 = cast<ReferenceType>(T1);
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const auto *Ref2 = cast<ReferenceType>(T2);
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if (Ref1->isSpelledAsLValue() != Ref2->isSpelledAsLValue())
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return false;
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if (Ref1->isInnerRef() != Ref2->isInnerRef())
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return false;
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if (!IsStructurallyEquivalent(Context, Ref1->getPointeeTypeAsWritten(),
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Ref2->getPointeeTypeAsWritten()))
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return false;
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break;
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}
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case Type::MemberPointer: {
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const auto *MemPtr1 = cast<MemberPointerType>(T1);
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const auto *MemPtr2 = cast<MemberPointerType>(T2);
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if (!IsStructurallyEquivalent(Context, MemPtr1->getPointeeType(),
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MemPtr2->getPointeeType()))
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return false;
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if (!IsStructurallyEquivalent(Context, QualType(MemPtr1->getClass(), 0),
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QualType(MemPtr2->getClass(), 0)))
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return false;
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break;
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}
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case Type::ConstantArray: {
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const auto *Array1 = cast<ConstantArrayType>(T1);
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const auto *Array2 = cast<ConstantArrayType>(T2);
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if (!llvm::APInt::isSameValue(Array1->getSize(), Array2->getSize()))
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return false;
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if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
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return false;
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break;
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}
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case Type::IncompleteArray:
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if (!IsArrayStructurallyEquivalent(Context, cast<ArrayType>(T1),
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cast<ArrayType>(T2)))
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return false;
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break;
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case Type::VariableArray: {
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const auto *Array1 = cast<VariableArrayType>(T1);
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const auto *Array2 = cast<VariableArrayType>(T2);
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if (!IsStructurallyEquivalent(Context, Array1->getSizeExpr(),
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Array2->getSizeExpr()))
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return false;
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if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
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return false;
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break;
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}
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case Type::DependentSizedArray: {
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const auto *Array1 = cast<DependentSizedArrayType>(T1);
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const auto *Array2 = cast<DependentSizedArrayType>(T2);
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if (!IsStructurallyEquivalent(Context, Array1->getSizeExpr(),
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Array2->getSizeExpr()))
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return false;
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if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
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return false;
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break;
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}
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case Type::DependentAddressSpace: {
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const auto *DepAddressSpace1 = cast<DependentAddressSpaceType>(T1);
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const auto *DepAddressSpace2 = cast<DependentAddressSpaceType>(T2);
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if (!IsStructurallyEquivalent(Context, DepAddressSpace1->getAddrSpaceExpr(),
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DepAddressSpace2->getAddrSpaceExpr()))
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return false;
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if (!IsStructurallyEquivalent(Context, DepAddressSpace1->getPointeeType(),
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DepAddressSpace2->getPointeeType()))
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return false;
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break;
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}
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case Type::DependentSizedExtVector: {
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const auto *Vec1 = cast<DependentSizedExtVectorType>(T1);
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const auto *Vec2 = cast<DependentSizedExtVectorType>(T2);
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if (!IsStructurallyEquivalent(Context, Vec1->getSizeExpr(),
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Vec2->getSizeExpr()))
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return false;
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if (!IsStructurallyEquivalent(Context, Vec1->getElementType(),
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Vec2->getElementType()))
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return false;
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break;
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}
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|
case Type::DependentVector: {
|
|
const auto *Vec1 = cast<DependentVectorType>(T1);
|
|
const auto *Vec2 = cast<DependentVectorType>(T2);
|
|
if (Vec1->getVectorKind() != Vec2->getVectorKind())
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Vec1->getSizeExpr(),
|
|
Vec2->getSizeExpr()))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Vec1->getElementType(),
|
|
Vec2->getElementType()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::Vector:
|
|
case Type::ExtVector: {
|
|
const auto *Vec1 = cast<VectorType>(T1);
|
|
const auto *Vec2 = cast<VectorType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Vec1->getElementType(),
|
|
Vec2->getElementType()))
|
|
return false;
|
|
if (Vec1->getNumElements() != Vec2->getNumElements())
|
|
return false;
|
|
if (Vec1->getVectorKind() != Vec2->getVectorKind())
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::FunctionProto: {
|
|
const auto *Proto1 = cast<FunctionProtoType>(T1);
|
|
const auto *Proto2 = cast<FunctionProtoType>(T2);
|
|
|
|
if (Proto1->getNumParams() != Proto2->getNumParams())
|
|
return false;
|
|
for (unsigned I = 0, N = Proto1->getNumParams(); I != N; ++I) {
|
|
if (!IsStructurallyEquivalent(Context, Proto1->getParamType(I),
|
|
Proto2->getParamType(I)))
|
|
return false;
|
|
}
|
|
if (Proto1->isVariadic() != Proto2->isVariadic())
|
|
return false;
|
|
|
|
if (Proto1->getMethodQuals() != Proto2->getMethodQuals())
|
|
return false;
|
|
|
|
// Check exceptions, this information is lost in canonical type.
|
|
const auto *OrigProto1 =
|
|
cast<FunctionProtoType>(OrigT1.getDesugaredType(Context.FromCtx));
|
|
const auto *OrigProto2 =
|
|
cast<FunctionProtoType>(OrigT2.getDesugaredType(Context.ToCtx));
|
|
auto Spec1 = OrigProto1->getExceptionSpecType();
|
|
auto Spec2 = OrigProto2->getExceptionSpecType();
|
|
|
|
if (Spec1 != Spec2)
|
|
return false;
|
|
if (Spec1 == EST_Dynamic) {
|
|
if (OrigProto1->getNumExceptions() != OrigProto2->getNumExceptions())
|
|
return false;
|
|
for (unsigned I = 0, N = OrigProto1->getNumExceptions(); I != N; ++I) {
|
|
if (!IsStructurallyEquivalent(Context, OrigProto1->getExceptionType(I),
|
|
OrigProto2->getExceptionType(I)))
|
|
return false;
|
|
}
|
|
} else if (isComputedNoexcept(Spec1)) {
|
|
if (!IsStructurallyEquivalent(Context, OrigProto1->getNoexceptExpr(),
|
|
OrigProto2->getNoexceptExpr()))
|
|
return false;
|
|
}
|
|
|
|
// Fall through to check the bits common with FunctionNoProtoType.
|
|
LLVM_FALLTHROUGH;
|
|
}
|
|
|
|
case Type::FunctionNoProto: {
|
|
const auto *Function1 = cast<FunctionType>(T1);
|
|
const auto *Function2 = cast<FunctionType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Function1->getReturnType(),
|
|
Function2->getReturnType()))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Function1->getExtInfo(),
|
|
Function2->getExtInfo()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::UnresolvedUsing:
|
|
if (!IsStructurallyEquivalent(Context,
|
|
cast<UnresolvedUsingType>(T1)->getDecl(),
|
|
cast<UnresolvedUsingType>(T2)->getDecl()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::Attributed:
|
|
if (!IsStructurallyEquivalent(Context,
|
|
cast<AttributedType>(T1)->getModifiedType(),
|
|
cast<AttributedType>(T2)->getModifiedType()))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(
|
|
Context, cast<AttributedType>(T1)->getEquivalentType(),
|
|
cast<AttributedType>(T2)->getEquivalentType()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::Paren:
|
|
if (!IsStructurallyEquivalent(Context, cast<ParenType>(T1)->getInnerType(),
|
|
cast<ParenType>(T2)->getInnerType()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::Typedef:
|
|
if (!IsStructurallyEquivalent(Context, cast<TypedefType>(T1)->getDecl(),
|
|
cast<TypedefType>(T2)->getDecl()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::TypeOfExpr:
|
|
if (!IsStructurallyEquivalent(
|
|
Context, cast<TypeOfExprType>(T1)->getUnderlyingExpr(),
|
|
cast<TypeOfExprType>(T2)->getUnderlyingExpr()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::TypeOf:
|
|
if (!IsStructurallyEquivalent(Context,
|
|
cast<TypeOfType>(T1)->getUnderlyingType(),
|
|
cast<TypeOfType>(T2)->getUnderlyingType()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::UnaryTransform:
|
|
if (!IsStructurallyEquivalent(
|
|
Context, cast<UnaryTransformType>(T1)->getUnderlyingType(),
|
|
cast<UnaryTransformType>(T2)->getUnderlyingType()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::Decltype:
|
|
if (!IsStructurallyEquivalent(Context,
|
|
cast<DecltypeType>(T1)->getUnderlyingExpr(),
|
|
cast<DecltypeType>(T2)->getUnderlyingExpr()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::Auto:
|
|
if (!IsStructurallyEquivalent(Context, cast<AutoType>(T1)->getDeducedType(),
|
|
cast<AutoType>(T2)->getDeducedType()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::DeducedTemplateSpecialization: {
|
|
const auto *DT1 = cast<DeducedTemplateSpecializationType>(T1);
|
|
const auto *DT2 = cast<DeducedTemplateSpecializationType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, DT1->getTemplateName(),
|
|
DT2->getTemplateName()))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, DT1->getDeducedType(),
|
|
DT2->getDeducedType()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::Record:
|
|
case Type::Enum:
|
|
if (!IsStructurallyEquivalent(Context, cast<TagType>(T1)->getDecl(),
|
|
cast<TagType>(T2)->getDecl()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::TemplateTypeParm: {
|
|
const auto *Parm1 = cast<TemplateTypeParmType>(T1);
|
|
const auto *Parm2 = cast<TemplateTypeParmType>(T2);
|
|
if (Parm1->getDepth() != Parm2->getDepth())
|
|
return false;
|
|
if (Parm1->getIndex() != Parm2->getIndex())
|
|
return false;
|
|
if (Parm1->isParameterPack() != Parm2->isParameterPack())
|
|
return false;
|
|
|
|
// Names of template type parameters are never significant.
|
|
break;
|
|
}
|
|
|
|
case Type::SubstTemplateTypeParm: {
|
|
const auto *Subst1 = cast<SubstTemplateTypeParmType>(T1);
|
|
const auto *Subst2 = cast<SubstTemplateTypeParmType>(T2);
|
|
if (!IsStructurallyEquivalent(Context,
|
|
QualType(Subst1->getReplacedParameter(), 0),
|
|
QualType(Subst2->getReplacedParameter(), 0)))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Subst1->getReplacementType(),
|
|
Subst2->getReplacementType()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::SubstTemplateTypeParmPack: {
|
|
const auto *Subst1 = cast<SubstTemplateTypeParmPackType>(T1);
|
|
const auto *Subst2 = cast<SubstTemplateTypeParmPackType>(T2);
|
|
if (!IsStructurallyEquivalent(Context,
|
|
QualType(Subst1->getReplacedParameter(), 0),
|
|
QualType(Subst2->getReplacedParameter(), 0)))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Subst1->getArgumentPack(),
|
|
Subst2->getArgumentPack()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::TemplateSpecialization: {
|
|
const auto *Spec1 = cast<TemplateSpecializationType>(T1);
|
|
const auto *Spec2 = cast<TemplateSpecializationType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Spec1->getTemplateName(),
|
|
Spec2->getTemplateName()))
|
|
return false;
|
|
if (Spec1->getNumArgs() != Spec2->getNumArgs())
|
|
return false;
|
|
for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) {
|
|
if (!IsStructurallyEquivalent(Context, Spec1->getArg(I),
|
|
Spec2->getArg(I)))
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Type::Elaborated: {
|
|
const auto *Elab1 = cast<ElaboratedType>(T1);
|
|
const auto *Elab2 = cast<ElaboratedType>(T2);
|
|
// CHECKME: what if a keyword is ETK_None or ETK_typename ?
|
|
if (Elab1->getKeyword() != Elab2->getKeyword())
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Elab1->getQualifier(),
|
|
Elab2->getQualifier()))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Elab1->getNamedType(),
|
|
Elab2->getNamedType()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::InjectedClassName: {
|
|
const auto *Inj1 = cast<InjectedClassNameType>(T1);
|
|
const auto *Inj2 = cast<InjectedClassNameType>(T2);
|
|
if (!IsStructurallyEquivalent(Context,
|
|
Inj1->getInjectedSpecializationType(),
|
|
Inj2->getInjectedSpecializationType()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::DependentName: {
|
|
const auto *Typename1 = cast<DependentNameType>(T1);
|
|
const auto *Typename2 = cast<DependentNameType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Typename1->getQualifier(),
|
|
Typename2->getQualifier()))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Typename1->getIdentifier(),
|
|
Typename2->getIdentifier()))
|
|
return false;
|
|
|
|
break;
|
|
}
|
|
|
|
case Type::DependentTemplateSpecialization: {
|
|
const auto *Spec1 = cast<DependentTemplateSpecializationType>(T1);
|
|
const auto *Spec2 = cast<DependentTemplateSpecializationType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Spec1->getQualifier(),
|
|
Spec2->getQualifier()))
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Spec1->getIdentifier(),
|
|
Spec2->getIdentifier()))
|
|
return false;
|
|
if (Spec1->getNumArgs() != Spec2->getNumArgs())
|
|
return false;
|
|
for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) {
|
|
if (!IsStructurallyEquivalent(Context, Spec1->getArg(I),
|
|
Spec2->getArg(I)))
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Type::PackExpansion:
|
|
if (!IsStructurallyEquivalent(Context,
|
|
cast<PackExpansionType>(T1)->getPattern(),
|
|
cast<PackExpansionType>(T2)->getPattern()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::ObjCInterface: {
|
|
const auto *Iface1 = cast<ObjCInterfaceType>(T1);
|
|
const auto *Iface2 = cast<ObjCInterfaceType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Iface1->getDecl(),
|
|
Iface2->getDecl()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::ObjCTypeParam: {
|
|
const auto *Obj1 = cast<ObjCTypeParamType>(T1);
|
|
const auto *Obj2 = cast<ObjCTypeParamType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Obj1->getDecl(), Obj2->getDecl()))
|
|
return false;
|
|
|
|
if (Obj1->getNumProtocols() != Obj2->getNumProtocols())
|
|
return false;
|
|
for (unsigned I = 0, N = Obj1->getNumProtocols(); I != N; ++I) {
|
|
if (!IsStructurallyEquivalent(Context, Obj1->getProtocol(I),
|
|
Obj2->getProtocol(I)))
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Type::ObjCObject: {
|
|
const auto *Obj1 = cast<ObjCObjectType>(T1);
|
|
const auto *Obj2 = cast<ObjCObjectType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Obj1->getBaseType(),
|
|
Obj2->getBaseType()))
|
|
return false;
|
|
if (Obj1->getNumProtocols() != Obj2->getNumProtocols())
|
|
return false;
|
|
for (unsigned I = 0, N = Obj1->getNumProtocols(); I != N; ++I) {
|
|
if (!IsStructurallyEquivalent(Context, Obj1->getProtocol(I),
|
|
Obj2->getProtocol(I)))
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Type::ObjCObjectPointer: {
|
|
const auto *Ptr1 = cast<ObjCObjectPointerType>(T1);
|
|
const auto *Ptr2 = cast<ObjCObjectPointerType>(T2);
|
|
if (!IsStructurallyEquivalent(Context, Ptr1->getPointeeType(),
|
|
Ptr2->getPointeeType()))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
case Type::Atomic:
|
|
if (!IsStructurallyEquivalent(Context, cast<AtomicType>(T1)->getValueType(),
|
|
cast<AtomicType>(T2)->getValueType()))
|
|
return false;
|
|
break;
|
|
|
|
case Type::Pipe:
|
|
if (!IsStructurallyEquivalent(Context, cast<PipeType>(T1)->getElementType(),
|
|
cast<PipeType>(T2)->getElementType()))
|
|
return false;
|
|
break;
|
|
} // end switch
|
|
|
|
return true;
|
|
}
|
|
|
|
/// Determine structural equivalence of two fields.
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
FieldDecl *Field1, FieldDecl *Field2) {
|
|
const auto *Owner2 = cast<RecordDecl>(Field2->getDeclContext());
|
|
|
|
// For anonymous structs/unions, match up the anonymous struct/union type
|
|
// declarations directly, so that we don't go off searching for anonymous
|
|
// types
|
|
if (Field1->isAnonymousStructOrUnion() &&
|
|
Field2->isAnonymousStructOrUnion()) {
|
|
RecordDecl *D1 = Field1->getType()->castAs<RecordType>()->getDecl();
|
|
RecordDecl *D2 = Field2->getType()->castAs<RecordType>()->getDecl();
|
|
return IsStructurallyEquivalent(Context, D1, D2);
|
|
}
|
|
|
|
// Check for equivalent field names.
|
|
IdentifierInfo *Name1 = Field1->getIdentifier();
|
|
IdentifierInfo *Name2 = Field2->getIdentifier();
|
|
if (!::IsStructurallyEquivalent(Name1, Name2)) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(Owner2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(Owner2);
|
|
Context.Diag2(Field2->getLocation(), diag::note_odr_field_name)
|
|
<< Field2->getDeclName();
|
|
Context.Diag1(Field1->getLocation(), diag::note_odr_field_name)
|
|
<< Field1->getDeclName();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (!IsStructurallyEquivalent(Context, Field1->getType(),
|
|
Field2->getType())) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(Owner2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(Owner2);
|
|
Context.Diag2(Field2->getLocation(), diag::note_odr_field)
|
|
<< Field2->getDeclName() << Field2->getType();
|
|
Context.Diag1(Field1->getLocation(), diag::note_odr_field)
|
|
<< Field1->getDeclName() << Field1->getType();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (Field1->isBitField() != Field2->isBitField()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(Owner2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(Owner2);
|
|
if (Field1->isBitField()) {
|
|
Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field)
|
|
<< Field1->getDeclName() << Field1->getType()
|
|
<< Field1->getBitWidthValue(Context.FromCtx);
|
|
Context.Diag2(Field2->getLocation(), diag::note_odr_not_bit_field)
|
|
<< Field2->getDeclName();
|
|
} else {
|
|
Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field)
|
|
<< Field2->getDeclName() << Field2->getType()
|
|
<< Field2->getBitWidthValue(Context.ToCtx);
|
|
Context.Diag1(Field1->getLocation(), diag::note_odr_not_bit_field)
|
|
<< Field1->getDeclName();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (Field1->isBitField()) {
|
|
// Make sure that the bit-fields are the same length.
|
|
unsigned Bits1 = Field1->getBitWidthValue(Context.FromCtx);
|
|
unsigned Bits2 = Field2->getBitWidthValue(Context.ToCtx);
|
|
|
|
if (Bits1 != Bits2) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(Owner2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(Owner2);
|
|
Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field)
|
|
<< Field2->getDeclName() << Field2->getType() << Bits2;
|
|
Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field)
|
|
<< Field1->getDeclName() << Field1->getType() << Bits1;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/// Determine structural equivalence of two methods.
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
CXXMethodDecl *Method1,
|
|
CXXMethodDecl *Method2) {
|
|
bool PropertiesEqual =
|
|
Method1->getDeclKind() == Method2->getDeclKind() &&
|
|
Method1->getRefQualifier() == Method2->getRefQualifier() &&
|
|
Method1->getAccess() == Method2->getAccess() &&
|
|
Method1->getOverloadedOperator() == Method2->getOverloadedOperator() &&
|
|
Method1->isStatic() == Method2->isStatic() &&
|
|
Method1->isConst() == Method2->isConst() &&
|
|
Method1->isVolatile() == Method2->isVolatile() &&
|
|
Method1->isVirtual() == Method2->isVirtual() &&
|
|
Method1->isPure() == Method2->isPure() &&
|
|
Method1->isDefaulted() == Method2->isDefaulted() &&
|
|
Method1->isDeleted() == Method2->isDeleted();
|
|
if (!PropertiesEqual)
|
|
return false;
|
|
// FIXME: Check for 'final'.
|
|
|
|
if (auto *Constructor1 = dyn_cast<CXXConstructorDecl>(Method1)) {
|
|
auto *Constructor2 = cast<CXXConstructorDecl>(Method2);
|
|
if (Constructor1->isExplicit() != Constructor2->isExplicit())
|
|
return false;
|
|
}
|
|
|
|
if (auto *Conversion1 = dyn_cast<CXXConversionDecl>(Method1)) {
|
|
auto *Conversion2 = cast<CXXConversionDecl>(Method2);
|
|
if (Conversion1->isExplicit() != Conversion2->isExplicit())
|
|
return false;
|
|
if (!IsStructurallyEquivalent(Context, Conversion1->getConversionType(),
|
|
Conversion2->getConversionType()))
|
|
return false;
|
|
}
|
|
|
|
const IdentifierInfo *Name1 = Method1->getIdentifier();
|
|
const IdentifierInfo *Name2 = Method2->getIdentifier();
|
|
if (!::IsStructurallyEquivalent(Name1, Name2)) {
|
|
return false;
|
|
// TODO: Names do not match, add warning like at check for FieldDecl.
|
|
}
|
|
|
|
// Check the prototypes.
|
|
if (!::IsStructurallyEquivalent(Context,
|
|
Method1->getType(), Method2->getType()))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/// Determine structural equivalence of two records.
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
RecordDecl *D1, RecordDecl *D2) {
|
|
if (D1->isUnion() != D2->isUnion()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_tag_kind_here)
|
|
<< D1->getDeclName() << (unsigned)D1->getTagKind();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (!D1->getDeclName() && !D2->getDeclName()) {
|
|
// If both anonymous structs/unions are in a record context, make sure
|
|
// they occur in the same location in the context records.
|
|
if (Optional<unsigned> Index1 =
|
|
StructuralEquivalenceContext::findUntaggedStructOrUnionIndex(D1)) {
|
|
if (Optional<unsigned> Index2 =
|
|
StructuralEquivalenceContext::findUntaggedStructOrUnionIndex(
|
|
D2)) {
|
|
if (*Index1 != *Index2)
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If both declarations are class template specializations, we know
|
|
// the ODR applies, so check the template and template arguments.
|
|
const auto *Spec1 = dyn_cast<ClassTemplateSpecializationDecl>(D1);
|
|
const auto *Spec2 = dyn_cast<ClassTemplateSpecializationDecl>(D2);
|
|
if (Spec1 && Spec2) {
|
|
// Check that the specialized templates are the same.
|
|
if (!IsStructurallyEquivalent(Context, Spec1->getSpecializedTemplate(),
|
|
Spec2->getSpecializedTemplate()))
|
|
return false;
|
|
|
|
// Check that the template arguments are the same.
|
|
if (Spec1->getTemplateArgs().size() != Spec2->getTemplateArgs().size())
|
|
return false;
|
|
|
|
for (unsigned I = 0, N = Spec1->getTemplateArgs().size(); I != N; ++I)
|
|
if (!IsStructurallyEquivalent(Context, Spec1->getTemplateArgs().get(I),
|
|
Spec2->getTemplateArgs().get(I)))
|
|
return false;
|
|
}
|
|
// If one is a class template specialization and the other is not, these
|
|
// structures are different.
|
|
else if (Spec1 || Spec2)
|
|
return false;
|
|
|
|
// Compare the definitions of these two records. If either or both are
|
|
// incomplete (i.e. it is a forward decl), we assume that they are
|
|
// equivalent.
|
|
D1 = D1->getDefinition();
|
|
D2 = D2->getDefinition();
|
|
if (!D1 || !D2)
|
|
return true;
|
|
|
|
// If any of the records has external storage and we do a minimal check (or
|
|
// AST import) we assume they are equivalent. (If we didn't have this
|
|
// assumption then `RecordDecl::LoadFieldsFromExternalStorage` could trigger
|
|
// another AST import which in turn would call the structural equivalency
|
|
// check again and finally we'd have an improper result.)
|
|
if (Context.EqKind == StructuralEquivalenceKind::Minimal)
|
|
if (D1->hasExternalLexicalStorage() || D2->hasExternalLexicalStorage())
|
|
return true;
|
|
|
|
// If one definition is currently being defined, we do not compare for
|
|
// equality and we assume that the decls are equal.
|
|
if (D1->isBeingDefined() || D2->isBeingDefined())
|
|
return true;
|
|
|
|
if (auto *D1CXX = dyn_cast<CXXRecordDecl>(D1)) {
|
|
if (auto *D2CXX = dyn_cast<CXXRecordDecl>(D2)) {
|
|
if (D1CXX->hasExternalLexicalStorage() &&
|
|
!D1CXX->isCompleteDefinition()) {
|
|
D1CXX->getASTContext().getExternalSource()->CompleteType(D1CXX);
|
|
}
|
|
|
|
if (D1CXX->getNumBases() != D2CXX->getNumBases()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag2(D2->getLocation(), diag::note_odr_number_of_bases)
|
|
<< D2CXX->getNumBases();
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_number_of_bases)
|
|
<< D1CXX->getNumBases();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Check the base classes.
|
|
for (CXXRecordDecl::base_class_iterator Base1 = D1CXX->bases_begin(),
|
|
BaseEnd1 = D1CXX->bases_end(),
|
|
Base2 = D2CXX->bases_begin();
|
|
Base1 != BaseEnd1; ++Base1, ++Base2) {
|
|
if (!IsStructurallyEquivalent(Context, Base1->getType(),
|
|
Base2->getType())) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag2(Base2->getBeginLoc(), diag::note_odr_base)
|
|
<< Base2->getType() << Base2->getSourceRange();
|
|
Context.Diag1(Base1->getBeginLoc(), diag::note_odr_base)
|
|
<< Base1->getType() << Base1->getSourceRange();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Check virtual vs. non-virtual inheritance mismatch.
|
|
if (Base1->isVirtual() != Base2->isVirtual()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag2(Base2->getBeginLoc(), diag::note_odr_virtual_base)
|
|
<< Base2->isVirtual() << Base2->getSourceRange();
|
|
Context.Diag1(Base1->getBeginLoc(), diag::note_odr_base)
|
|
<< Base1->isVirtual() << Base1->getSourceRange();
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Check the friends for consistency.
|
|
CXXRecordDecl::friend_iterator Friend2 = D2CXX->friend_begin(),
|
|
Friend2End = D2CXX->friend_end();
|
|
for (CXXRecordDecl::friend_iterator Friend1 = D1CXX->friend_begin(),
|
|
Friend1End = D1CXX->friend_end();
|
|
Friend1 != Friend1End; ++Friend1, ++Friend2) {
|
|
if (Friend2 == Friend2End) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2CXX);
|
|
Context.Diag1((*Friend1)->getFriendLoc(), diag::note_odr_friend);
|
|
Context.Diag2(D2->getLocation(), diag::note_odr_missing_friend);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (!IsStructurallyEquivalent(Context, *Friend1, *Friend2)) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2CXX);
|
|
Context.Diag1((*Friend1)->getFriendLoc(), diag::note_odr_friend);
|
|
Context.Diag2((*Friend2)->getFriendLoc(), diag::note_odr_friend);
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (Friend2 != Friend2End) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag2((*Friend2)->getFriendLoc(), diag::note_odr_friend);
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_missing_friend);
|
|
}
|
|
return false;
|
|
}
|
|
} else if (D1CXX->getNumBases() > 0) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
const CXXBaseSpecifier *Base1 = D1CXX->bases_begin();
|
|
Context.Diag1(Base1->getBeginLoc(), diag::note_odr_base)
|
|
<< Base1->getType() << Base1->getSourceRange();
|
|
Context.Diag2(D2->getLocation(), diag::note_odr_missing_base);
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Check the fields for consistency.
|
|
RecordDecl::field_iterator Field2 = D2->field_begin(),
|
|
Field2End = D2->field_end();
|
|
for (RecordDecl::field_iterator Field1 = D1->field_begin(),
|
|
Field1End = D1->field_end();
|
|
Field1 != Field1End; ++Field1, ++Field2) {
|
|
if (Field2 == Field2End) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag1(Field1->getLocation(), diag::note_odr_field)
|
|
<< Field1->getDeclName() << Field1->getType();
|
|
Context.Diag2(D2->getLocation(), diag::note_odr_missing_field);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (!IsStructurallyEquivalent(Context, *Field1, *Field2))
|
|
return false;
|
|
}
|
|
|
|
if (Field2 != Field2End) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag2(Field2->getLocation(), diag::note_odr_field)
|
|
<< Field2->getDeclName() << Field2->getType();
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_missing_field);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/// Determine structural equivalence of two enums.
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
EnumDecl *D1, EnumDecl *D2) {
|
|
|
|
// Compare the definitions of these two enums. If either or both are
|
|
// incomplete (i.e. forward declared), we assume that they are equivalent.
|
|
D1 = D1->getDefinition();
|
|
D2 = D2->getDefinition();
|
|
if (!D1 || !D2)
|
|
return true;
|
|
|
|
EnumDecl::enumerator_iterator EC2 = D2->enumerator_begin(),
|
|
EC2End = D2->enumerator_end();
|
|
for (EnumDecl::enumerator_iterator EC1 = D1->enumerator_begin(),
|
|
EC1End = D1->enumerator_end();
|
|
EC1 != EC1End; ++EC1, ++EC2) {
|
|
if (EC2 == EC2End) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator)
|
|
<< EC1->getDeclName() << EC1->getInitVal().toString(10);
|
|
Context.Diag2(D2->getLocation(), diag::note_odr_missing_enumerator);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
llvm::APSInt Val1 = EC1->getInitVal();
|
|
llvm::APSInt Val2 = EC2->getInitVal();
|
|
if (!llvm::APSInt::isSameValue(Val1, Val2) ||
|
|
!IsStructurallyEquivalent(EC1->getIdentifier(), EC2->getIdentifier())) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator)
|
|
<< EC2->getDeclName() << EC2->getInitVal().toString(10);
|
|
Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator)
|
|
<< EC1->getDeclName() << EC1->getInitVal().toString(10);
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (EC2 != EC2End) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
Context.ErrorOnTagTypeMismatch
|
|
? diag::err_odr_tag_type_inconsistent
|
|
: diag::warn_odr_tag_type_inconsistent)
|
|
<< Context.ToCtx.getTypeDeclType(D2);
|
|
Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator)
|
|
<< EC2->getDeclName() << EC2->getInitVal().toString(10);
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_missing_enumerator);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
TemplateParameterList *Params1,
|
|
TemplateParameterList *Params2) {
|
|
if (Params1->size() != Params2->size()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(Params2->getTemplateLoc(),
|
|
diag::err_odr_different_num_template_parameters)
|
|
<< Params1->size() << Params2->size();
|
|
Context.Diag1(Params1->getTemplateLoc(),
|
|
diag::note_odr_template_parameter_list);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
for (unsigned I = 0, N = Params1->size(); I != N; ++I) {
|
|
if (Params1->getParam(I)->getKind() != Params2->getParam(I)->getKind()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(Params2->getParam(I)->getLocation(),
|
|
diag::err_odr_different_template_parameter_kind);
|
|
Context.Diag1(Params1->getParam(I)->getLocation(),
|
|
diag::note_odr_template_parameter_here);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (!IsStructurallyEquivalent(Context, Params1->getParam(I),
|
|
Params2->getParam(I)))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
TemplateTypeParmDecl *D1,
|
|
TemplateTypeParmDecl *D2) {
|
|
if (D1->isParameterPack() != D2->isParameterPack()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
|
|
<< D2->isParameterPack();
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
|
|
<< D1->isParameterPack();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
NonTypeTemplateParmDecl *D1,
|
|
NonTypeTemplateParmDecl *D2) {
|
|
if (D1->isParameterPack() != D2->isParameterPack()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
|
|
<< D2->isParameterPack();
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
|
|
<< D1->isParameterPack();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Check types.
|
|
if (!IsStructurallyEquivalent(Context, D1->getType(), D2->getType())) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(),
|
|
diag::err_odr_non_type_parameter_type_inconsistent)
|
|
<< D2->getType() << D1->getType();
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_value_here)
|
|
<< D1->getType();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
TemplateTemplateParmDecl *D1,
|
|
TemplateTemplateParmDecl *D2) {
|
|
if (D1->isParameterPack() != D2->isParameterPack()) {
|
|
if (Context.Complain) {
|
|
Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
|
|
<< D2->isParameterPack();
|
|
Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
|
|
<< D1->isParameterPack();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Check template parameter lists.
|
|
return IsStructurallyEquivalent(Context, D1->getTemplateParameters(),
|
|
D2->getTemplateParameters());
|
|
}
|
|
|
|
static bool IsTemplateDeclCommonStructurallyEquivalent(
|
|
StructuralEquivalenceContext &Ctx, TemplateDecl *D1, TemplateDecl *D2) {
|
|
if (!IsStructurallyEquivalent(D1->getIdentifier(), D2->getIdentifier()))
|
|
return false;
|
|
if (!D1->getIdentifier()) // Special name
|
|
if (D1->getNameAsString() != D2->getNameAsString())
|
|
return false;
|
|
return IsStructurallyEquivalent(Ctx, D1->getTemplateParameters(),
|
|
D2->getTemplateParameters());
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
ClassTemplateDecl *D1,
|
|
ClassTemplateDecl *D2) {
|
|
// Check template parameters.
|
|
if (!IsTemplateDeclCommonStructurallyEquivalent(Context, D1, D2))
|
|
return false;
|
|
|
|
// Check the templated declaration.
|
|
return IsStructurallyEquivalent(Context, D1->getTemplatedDecl(),
|
|
D2->getTemplatedDecl());
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
FunctionTemplateDecl *D1,
|
|
FunctionTemplateDecl *D2) {
|
|
// Check template parameters.
|
|
if (!IsTemplateDeclCommonStructurallyEquivalent(Context, D1, D2))
|
|
return false;
|
|
|
|
// Check the templated declaration.
|
|
return IsStructurallyEquivalent(Context, D1->getTemplatedDecl()->getType(),
|
|
D2->getTemplatedDecl()->getType());
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
FriendDecl *D1, FriendDecl *D2) {
|
|
if ((D1->getFriendType() && D2->getFriendDecl()) ||
|
|
(D1->getFriendDecl() && D2->getFriendType())) {
|
|
return false;
|
|
}
|
|
if (D1->getFriendType() && D2->getFriendType())
|
|
return IsStructurallyEquivalent(Context,
|
|
D1->getFriendType()->getType(),
|
|
D2->getFriendType()->getType());
|
|
if (D1->getFriendDecl() && D2->getFriendDecl())
|
|
return IsStructurallyEquivalent(Context, D1->getFriendDecl(),
|
|
D2->getFriendDecl());
|
|
return false;
|
|
}
|
|
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
FunctionDecl *D1, FunctionDecl *D2) {
|
|
// FIXME: Consider checking for function attributes as well.
|
|
if (!IsStructurallyEquivalent(Context, D1->getType(), D2->getType()))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/// Determine structural equivalence of two declarations.
|
|
static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
|
|
Decl *D1, Decl *D2) {
|
|
// FIXME: Check for known structural equivalences via a callback of some sort.
|
|
|
|
// Check whether we already know that these two declarations are not
|
|
// structurally equivalent.
|
|
if (Context.NonEquivalentDecls.count(
|
|
std::make_pair(D1->getCanonicalDecl(), D2->getCanonicalDecl())))
|
|
return false;
|
|
|
|
// Determine whether we've already produced a tentative equivalence for D1.
|
|
Decl *&EquivToD1 = Context.TentativeEquivalences[D1->getCanonicalDecl()];
|
|
if (EquivToD1)
|
|
return EquivToD1 == D2->getCanonicalDecl();
|
|
|
|
// Produce a tentative equivalence D1 <-> D2, which will be checked later.
|
|
EquivToD1 = D2->getCanonicalDecl();
|
|
Context.DeclsToCheck.push_back(D1->getCanonicalDecl());
|
|
return true;
|
|
}
|
|
|
|
DiagnosticBuilder StructuralEquivalenceContext::Diag1(SourceLocation Loc,
|
|
unsigned DiagID) {
|
|
assert(Complain && "Not allowed to complain");
|
|
if (LastDiagFromC2)
|
|
FromCtx.getDiagnostics().notePriorDiagnosticFrom(ToCtx.getDiagnostics());
|
|
LastDiagFromC2 = false;
|
|
return FromCtx.getDiagnostics().Report(Loc, DiagID);
|
|
}
|
|
|
|
DiagnosticBuilder StructuralEquivalenceContext::Diag2(SourceLocation Loc,
|
|
unsigned DiagID) {
|
|
assert(Complain && "Not allowed to complain");
|
|
if (!LastDiagFromC2)
|
|
ToCtx.getDiagnostics().notePriorDiagnosticFrom(FromCtx.getDiagnostics());
|
|
LastDiagFromC2 = true;
|
|
return ToCtx.getDiagnostics().Report(Loc, DiagID);
|
|
}
|
|
|
|
Optional<unsigned>
|
|
StructuralEquivalenceContext::findUntaggedStructOrUnionIndex(RecordDecl *Anon) {
|
|
ASTContext &Context = Anon->getASTContext();
|
|
QualType AnonTy = Context.getRecordType(Anon);
|
|
|
|
const auto *Owner = dyn_cast<RecordDecl>(Anon->getDeclContext());
|
|
if (!Owner)
|
|
return None;
|
|
|
|
unsigned Index = 0;
|
|
for (const auto *D : Owner->noload_decls()) {
|
|
const auto *F = dyn_cast<FieldDecl>(D);
|
|
if (!F)
|
|
continue;
|
|
|
|
if (F->isAnonymousStructOrUnion()) {
|
|
if (Context.hasSameType(F->getType(), AnonTy))
|
|
break;
|
|
++Index;
|
|
continue;
|
|
}
|
|
|
|
// If the field looks like this:
|
|
// struct { ... } A;
|
|
QualType FieldType = F->getType();
|
|
// In case of nested structs.
|
|
while (const auto *ElabType = dyn_cast<ElaboratedType>(FieldType))
|
|
FieldType = ElabType->getNamedType();
|
|
|
|
if (const auto *RecType = dyn_cast<RecordType>(FieldType)) {
|
|
const RecordDecl *RecDecl = RecType->getDecl();
|
|
if (RecDecl->getDeclContext() == Owner && !RecDecl->getIdentifier()) {
|
|
if (Context.hasSameType(FieldType, AnonTy))
|
|
break;
|
|
++Index;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
return Index;
|
|
}
|
|
|
|
bool StructuralEquivalenceContext::IsEquivalent(Decl *D1, Decl *D2) {
|
|
|
|
// Ensure that the implementation functions (all static functions in this TU)
|
|
// never call the public ASTStructuralEquivalence::IsEquivalent() functions,
|
|
// because that will wreak havoc the internal state (DeclsToCheck and
|
|
// TentativeEquivalences members) and can cause faulty behaviour. For
|
|
// instance, some leaf declarations can be stated and cached as inequivalent
|
|
// as a side effect of one inequivalent element in the DeclsToCheck list.
|
|
assert(DeclsToCheck.empty());
|
|
assert(TentativeEquivalences.empty());
|
|
|
|
if (!::IsStructurallyEquivalent(*this, D1, D2))
|
|
return false;
|
|
|
|
return !Finish();
|
|
}
|
|
|
|
bool StructuralEquivalenceContext::IsEquivalent(QualType T1, QualType T2) {
|
|
assert(DeclsToCheck.empty());
|
|
assert(TentativeEquivalences.empty());
|
|
if (!::IsStructurallyEquivalent(*this, T1, T2))
|
|
return false;
|
|
|
|
return !Finish();
|
|
}
|
|
|
|
bool StructuralEquivalenceContext::CheckCommonEquivalence(Decl *D1, Decl *D2) {
|
|
// Check for equivalent described template.
|
|
TemplateDecl *Template1 = D1->getDescribedTemplate();
|
|
TemplateDecl *Template2 = D2->getDescribedTemplate();
|
|
if ((Template1 != nullptr) != (Template2 != nullptr))
|
|
return false;
|
|
if (Template1 && !IsStructurallyEquivalent(*this, Template1, Template2))
|
|
return false;
|
|
|
|
// FIXME: Move check for identifier names into this function.
|
|
|
|
return true;
|
|
}
|
|
|
|
bool StructuralEquivalenceContext::CheckKindSpecificEquivalence(
|
|
Decl *D1, Decl *D2) {
|
|
// FIXME: Switch on all declaration kinds. For now, we're just going to
|
|
// check the obvious ones.
|
|
if (auto *Record1 = dyn_cast<RecordDecl>(D1)) {
|
|
if (auto *Record2 = dyn_cast<RecordDecl>(D2)) {
|
|
// Check for equivalent structure names.
|
|
IdentifierInfo *Name1 = Record1->getIdentifier();
|
|
if (!Name1 && Record1->getTypedefNameForAnonDecl())
|
|
Name1 = Record1->getTypedefNameForAnonDecl()->getIdentifier();
|
|
IdentifierInfo *Name2 = Record2->getIdentifier();
|
|
if (!Name2 && Record2->getTypedefNameForAnonDecl())
|
|
Name2 = Record2->getTypedefNameForAnonDecl()->getIdentifier();
|
|
if (!::IsStructurallyEquivalent(Name1, Name2) ||
|
|
!::IsStructurallyEquivalent(*this, Record1, Record2))
|
|
return false;
|
|
} else {
|
|
// Record/non-record mismatch.
|
|
return false;
|
|
}
|
|
} else if (auto *Enum1 = dyn_cast<EnumDecl>(D1)) {
|
|
if (auto *Enum2 = dyn_cast<EnumDecl>(D2)) {
|
|
// Check for equivalent enum names.
|
|
IdentifierInfo *Name1 = Enum1->getIdentifier();
|
|
if (!Name1 && Enum1->getTypedefNameForAnonDecl())
|
|
Name1 = Enum1->getTypedefNameForAnonDecl()->getIdentifier();
|
|
IdentifierInfo *Name2 = Enum2->getIdentifier();
|
|
if (!Name2 && Enum2->getTypedefNameForAnonDecl())
|
|
Name2 = Enum2->getTypedefNameForAnonDecl()->getIdentifier();
|
|
if (!::IsStructurallyEquivalent(Name1, Name2) ||
|
|
!::IsStructurallyEquivalent(*this, Enum1, Enum2))
|
|
return false;
|
|
} else {
|
|
// Enum/non-enum mismatch
|
|
return false;
|
|
}
|
|
} else if (const auto *Typedef1 = dyn_cast<TypedefNameDecl>(D1)) {
|
|
if (const auto *Typedef2 = dyn_cast<TypedefNameDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(Typedef1->getIdentifier(),
|
|
Typedef2->getIdentifier()) ||
|
|
!::IsStructurallyEquivalent(*this, Typedef1->getUnderlyingType(),
|
|
Typedef2->getUnderlyingType()))
|
|
return false;
|
|
} else {
|
|
// Typedef/non-typedef mismatch.
|
|
return false;
|
|
}
|
|
} else if (auto *ClassTemplate1 = dyn_cast<ClassTemplateDecl>(D1)) {
|
|
if (auto *ClassTemplate2 = dyn_cast<ClassTemplateDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(*this, ClassTemplate1,
|
|
ClassTemplate2))
|
|
return false;
|
|
} else {
|
|
// Class template/non-class-template mismatch.
|
|
return false;
|
|
}
|
|
} else if (auto *FunctionTemplate1 = dyn_cast<FunctionTemplateDecl>(D1)) {
|
|
if (auto *FunctionTemplate2 = dyn_cast<FunctionTemplateDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(*this, FunctionTemplate1,
|
|
FunctionTemplate2))
|
|
return false;
|
|
} else {
|
|
// Class template/non-class-template mismatch.
|
|
return false;
|
|
}
|
|
} else if (auto *TTP1 = dyn_cast<TemplateTypeParmDecl>(D1)) {
|
|
if (auto *TTP2 = dyn_cast<TemplateTypeParmDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(*this, TTP1, TTP2))
|
|
return false;
|
|
} else {
|
|
// Kind mismatch.
|
|
return false;
|
|
}
|
|
} else if (auto *NTTP1 = dyn_cast<NonTypeTemplateParmDecl>(D1)) {
|
|
if (auto *NTTP2 = dyn_cast<NonTypeTemplateParmDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(*this, NTTP1, NTTP2))
|
|
return false;
|
|
} else {
|
|
// Kind mismatch.
|
|
return false;
|
|
}
|
|
} else if (auto *TTP1 = dyn_cast<TemplateTemplateParmDecl>(D1)) {
|
|
if (auto *TTP2 = dyn_cast<TemplateTemplateParmDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(*this, TTP1, TTP2))
|
|
return false;
|
|
} else {
|
|
// Kind mismatch.
|
|
return false;
|
|
}
|
|
} else if (auto *MD1 = dyn_cast<CXXMethodDecl>(D1)) {
|
|
if (auto *MD2 = dyn_cast<CXXMethodDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(*this, MD1, MD2))
|
|
return false;
|
|
} else {
|
|
// Kind mismatch.
|
|
return false;
|
|
}
|
|
} else if (FunctionDecl *FD1 = dyn_cast<FunctionDecl>(D1)) {
|
|
if (FunctionDecl *FD2 = dyn_cast<FunctionDecl>(D2)) {
|
|
if (FD1->isOverloadedOperator()) {
|
|
if (!FD2->isOverloadedOperator())
|
|
return false;
|
|
if (FD1->getOverloadedOperator() != FD2->getOverloadedOperator())
|
|
return false;
|
|
}
|
|
if (!::IsStructurallyEquivalent(FD1->getIdentifier(),
|
|
FD2->getIdentifier()))
|
|
return false;
|
|
if (!::IsStructurallyEquivalent(*this, FD1, FD2))
|
|
return false;
|
|
} else {
|
|
// Kind mismatch.
|
|
return false;
|
|
}
|
|
} else if (FriendDecl *FrD1 = dyn_cast<FriendDecl>(D1)) {
|
|
if (FriendDecl *FrD2 = dyn_cast<FriendDecl>(D2)) {
|
|
if (!::IsStructurallyEquivalent(*this, FrD1, FrD2))
|
|
return false;
|
|
} else {
|
|
// Kind mismatch.
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool StructuralEquivalenceContext::Finish() {
|
|
while (!DeclsToCheck.empty()) {
|
|
// Check the next declaration.
|
|
Decl *D1 = DeclsToCheck.front();
|
|
DeclsToCheck.pop_front();
|
|
|
|
Decl *D2 = TentativeEquivalences[D1];
|
|
assert(D2 && "Unrecorded tentative equivalence?");
|
|
|
|
bool Equivalent =
|
|
CheckCommonEquivalence(D1, D2) && CheckKindSpecificEquivalence(D1, D2);
|
|
|
|
if (!Equivalent) {
|
|
// Note that these two declarations are not equivalent (and we already
|
|
// know about it).
|
|
NonEquivalentDecls.insert(
|
|
std::make_pair(D1->getCanonicalDecl(), D2->getCanonicalDecl()));
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|