llvm-project/clang/test/AST/ast-dump-recovery.cpp

// RUN: not %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -fcxx-exceptions -std=gnu++17 -frecovery-ast -frecovery-ast-type -ast-dump %s | FileCheck -strict-whitespace %s
// RUN: not %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -fcxx-exceptions -std=gnu++17 -fno-recovery-ast -ast-dump %s | FileCheck --check-prefix=DISABLED -strict-whitespace %s

int some_func(int *);

// CHECK:     VarDecl {{.*}} invalid_call
// CHECK-NEXT: `-ImplicitCastExpr {{.*}} 'int' contains-errors
// CHECK-NEXT:  `-RecoveryExpr {{.*}} 'int' contains-errors
// CHECK-NEXT:    |-UnresolvedLookupExpr {{.*}} 'some_func'
// CHECK-NEXT:    `-IntegerLiteral {{.*}} 123
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int invalid_call = some_func(123);

int ambig_func(double);
int ambig_func(float);

// CHECK:     VarDecl {{.*}} ambig_call
// CHECK-NEXT: `-ImplicitCastExpr {{.*}} 'int' contains-errors
// CHECK-NEXT:  `-RecoveryExpr {{.*}} 'int' contains-errors
// CHECK-NEXT:    |-UnresolvedLookupExpr {{.*}} 'ambig_func'
// CHECK-NEXT:    `-IntegerLiteral {{.*}} 123
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int ambig_call = ambig_func(123);

// CHECK:     VarDecl {{.*}} unresolved_call1
// CHECK-NEXT:`-RecoveryExpr {{.*}} '<dependent type>' contains-errors
// CHECK-NEXT:  `-UnresolvedLookupExpr {{.*}} 'bar'
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int unresolved_call1 = bar();

// CHECK:     VarDecl {{.*}} unresolved_call2
// CHECK-NEXT:`-CallExpr {{.*}} contains-errors
// CHECK-NEXT:  |-UnresolvedLookupExpr {{.*}} 'bar'
// CHECK-NEXT:  |-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  | `-UnresolvedLookupExpr {{.*}} 'baz'
// CHECK-NEXT:   `-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:     `-UnresolvedLookupExpr {{.*}} 'qux'
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int unresolved_call2 = bar(baz(), qux());

constexpr int a = 10;

// CHECK:     VarDecl {{.*}} postfix_inc
// CHECK-NEXT:`-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  `-DeclRefExpr {{.*}} 'a'
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int postfix_inc = a++;

// CHECK:     VarDecl {{.*}} prefix_inc
// CHECK-NEXT:`-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  `-DeclRefExpr {{.*}} 'a'
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int prefix_inc = ++a;

// CHECK:     VarDecl {{.*}} unary_address
// CHECK-NEXT:`-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  `-ParenExpr {{.*}}
// CHECK-NEXT:    `-BinaryOperator {{.*}} '+'
// CHECK-NEXT:      |-ImplicitCastExpr
// CHECK-NEXT:      | `-DeclRefExpr {{.*}} 'a'
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int unary_address = &(a + 1);

// CHECK:     VarDecl {{.*}} unary_bitinverse
// CHECK-NEXT:`-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  `-ParenExpr {{.*}}
// CHECK-NEXT:    `-BinaryOperator {{.*}} '+'
// CHECK-NEXT:      |-ImplicitCastExpr
// CHECK-NEXT:      | `-ImplicitCastExpr
// CHECK-NEXT:      |   `-DeclRefExpr {{.*}} 'a'
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int unary_bitinverse = ~(a + 0.0);

// CHECK:     VarDecl {{.*}} binary
// CHECK-NEXT:`-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  |-DeclRefExpr {{.*}} 'a'
// CHECK-NEXT:  `-CXXNullPtrLiteralExpr
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int binary = a + nullptr;

// CHECK:     VarDecl {{.*}} ternary
// CHECK-NEXT:`-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  |-DeclRefExpr {{.*}} 'a'
// CHECK-NEXT:  |-CXXNullPtrLiteralExpr
// CHECK-NEXT:  `-DeclRefExpr {{.*}} 'a'
// DISABLED-NOT: -RecoveryExpr {{.*}} contains-errors
int ternary = a ? nullptr : a;

// CHECK:     FunctionDecl
// CHECK-NEXT:|-ParmVarDecl {{.*}} x
// CHECK-NEXT:`-CompoundStmt
// CHECK-NEXT: |-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT: | `-DeclRefExpr {{.*}} 'foo'
// CHECK-NEXT: `-CallExpr {{.*}} contains-errors
// CHECK-NEXT:  |-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:  | `-DeclRefExpr {{.*}} 'foo'
// CHECK-NEXT:  `-DeclRefExpr {{.*}} 'x'
struct Foo {} foo;
void test(int x) {
  foo.abc;
  foo->func(x);
}

// CHECK:     |-AlignedAttr {{.*}} alignas
// CHECK-NEXT:| `-RecoveryExpr {{.*}} contains-errors
// CHECK-NEXT:|   `-UnresolvedLookupExpr {{.*}} 'invalid'
struct alignas(invalid()) Aligned {};

void InvalidInitalizer(int x) {
  struct Bar { Bar(); };
  // CHECK:     `-VarDecl {{.*}} a1 'Bar'
  // CHECK-NEXT: `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:  `-IntegerLiteral {{.*}} 'int' 1
  Bar a1(1);
  // CHECK:     `-VarDecl {{.*}} a2 'Bar'
  // CHECK-NEXT: `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:  `-DeclRefExpr {{.*}} 'x'
  Bar a2(x);
  // CHECK:     `-VarDecl {{.*}} a3 'Bar'
  // CHECK-NEXT: `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:  `-InitListExpr
  // CHECK-NEDT:   `-DeclRefExpr {{.*}} 'x'
  Bar a3{x};
  // CHECK:     `-VarDecl {{.*}} a4 'Bar'
  // CHECK-NEXT: `-ParenListExpr {{.*}} 'NULL TYPE' contains-errors
  // CHECK-NEXT:  `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:   `-UnresolvedLookupExpr {{.*}} 'invalid'
  Bar a4(invalid());
  // CHECK:     `-VarDecl {{.*}} a5 'Bar'
  // CHECK-NEXT: `-InitListExpr {{.*}} contains-errors
  // CHECK-NEXT:  `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:   `-UnresolvedLookupExpr {{.*}} 'invalid'
  Bar a5{invalid()};

  // CHECK:     `-VarDecl {{.*}} b1 'Bar'
  // CHECK-NEXT: `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:  `-IntegerLiteral {{.*}} 'int' 1
  Bar b1 = 1;
  // CHECK:     `-VarDecl {{.*}} b2 'Bar'
  // CHECK-NEXT: `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:  `-InitListExpr
  Bar b2 = {1};
  // FIXME: preserve the invalid initializer.
  // CHECK: `-VarDecl {{.*}} b3 'Bar'
  Bar b3 = Bar(x);
  // FIXME: preserve the invalid initializer.
  // CHECK: `-VarDecl {{.*}} b4 'Bar'
  Bar b4 = Bar{x};
  // CHECK:     `-VarDecl {{.*}} b5 'Bar'
  // CHECK-NEXT: `-CXXUnresolvedConstructExpr {{.*}} 'Bar' contains-errors 'Bar'
  // CHECK-NEXT:   `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:     `-UnresolvedLookupExpr {{.*}} 'invalid'
  Bar b5 = Bar(invalid());
  // CHECK:     `-VarDecl {{.*}} b6 'Bar'
  // CHECK-NEXT: `-CXXUnresolvedConstructExpr {{.*}} 'Bar' contains-errors 'Bar'
  // CHECK-NEXT:  `-InitListExpr {{.*}} contains-errors
  // CHECK-NEXT:   `-RecoveryExpr {{.*}} contains-errors
  // CHECK-NEXT:     `-UnresolvedLookupExpr {{.*}} 'invalid'
  Bar b6 = Bar{invalid()};
}
void InitializerForAuto() {
  // CHECK:     `-VarDecl {{.*}} invalid a 'auto'
  // CHECK-NEXT: `-RecoveryExpr {{.*}} '<dependent type>' contains-errors
  // CHECK-NEXT:   `-UnresolvedLookupExpr {{.*}} 'invalid'
  auto a = invalid();

  // CHECK:     `-VarDecl {{.*}} invalid b 'auto'
  // CHECK-NEXT: `-CallExpr {{.*}} '<dependent type>' contains-errors
  // CHECK-NEXT:   |-UnresolvedLookupExpr {{.*}} 'some_func'
  // CHECK-NEXT:   `-RecoveryExpr {{.*}} '<dependent type>' contains-errors
  // CHECK-NEXT:     `-UnresolvedLookupExpr {{.*}} 'invalid'
  auto b = some_func(invalid());

  decltype(ned);
  // very bad initailizer: there is an unresolved typo expr internally, we just
  // drop it.
  // CHECK: `-VarDecl {{.*}} invalid unresolved_typo 'auto'
  auto unresolved_typo = gned.*[] {};
}

// CHECK:      `-TypeAliasDecl {{.*}} Escape 'decltype([] {
// CHECK-NEXT:   return <recovery-expr>(undef);
// CHECK-NEXT: }())'
// CHECK-NEXT:   `-DecltypeType {{.*}} 'decltype([] {
// CHECK-NEXT:     return <recovery-expr>(undef);
// CHECK-NEXT:   }())' dependent
using Escape = decltype([] { return undef(); }());