forked from OSchip/llvm-project
488 lines
18 KiB
C++
488 lines
18 KiB
C++
// RUN: %check_clang_tidy %s modernize-make-unique %t -- -- -std=c++11 \
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// RUN: -I%S/Inputs/modernize-smart-ptr
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#include "unique_ptr.h"
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#include "initializer_list.h"
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// CHECK-FIXES: #include <memory>
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struct Base {
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Base();
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Base(int, int);
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};
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struct Derived : public Base {
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Derived();
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Derived(int, int);
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};
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struct APair {
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int a, b;
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};
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struct DPair {
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DPair() : a(0), b(0) {}
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DPair(int x, int y) : a(y), b(x) {}
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int a, b;
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};
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struct Empty {};
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struct E {
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E(std::initializer_list<int>);
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E();
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};
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struct F {
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F(std::initializer_list<int>);
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F();
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int a;
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};
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struct G {
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G(std::initializer_list<int>);
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G(int);
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};
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struct H {
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H(std::vector<int>);
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};
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struct I {
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I(G);
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};
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namespace {
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class Foo {};
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} // namespace
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namespace bar {
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class Bar {};
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} // namespace bar
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template <class T>
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using unique_ptr_ = std::unique_ptr<T>;
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void *operator new(__SIZE_TYPE__ Count, void *Ptr);
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int g(std::unique_ptr<int> P);
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std::unique_ptr<Base> getPointer() {
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return std::unique_ptr<Base>(new Base);
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// CHECK-MESSAGES: :[[@LINE-1]]:10: warning: use std::make_unique instead
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// CHECK-FIXES: return std::make_unique<Base>();
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}
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void basic() {
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std::unique_ptr<int> P1 = std::unique_ptr<int>(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:29: warning: use std::make_unique instead [modernize-make-unique]
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// CHECK-FIXES: std::unique_ptr<int> P1 = std::make_unique<int>();
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P1.reset(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: use std::make_unique instead [modernize-make-unique]
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// CHECK-FIXES: P1 = std::make_unique<int>();
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P1 = std::unique_ptr<int>(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: use std::make_unique instead [modernize-make-unique]
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// CHECK-FIXES: P1 = std::make_unique<int>();
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// Without parenthesis.
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std::unique_ptr<int> P2 = std::unique_ptr<int>(new int);
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// CHECK-MESSAGES: :[[@LINE-1]]:29: warning: use std::make_unique instead [modernize-make-unique]
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// CHECK-FIXES: std::unique_ptr<int> P2 = std::make_unique<int>();
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P2.reset(new int);
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: use std::make_unique instead [modernize-make-unique]
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// CHECK-FIXES: P2 = std::make_unique<int>();
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P2 = std::unique_ptr<int>(new int);
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: use std::make_unique instead [modernize-make-unique]
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// CHECK-FIXES: P2 = std::make_unique<int>();
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// With auto.
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auto P3 = std::unique_ptr<int>(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: use std::make_unique instead
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// CHECK-FIXES: auto P3 = std::make_unique<int>();
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{
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// No std.
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using namespace std;
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unique_ptr<int> Q = unique_ptr<int>(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:25: warning: use std::make_unique instead
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// CHECK-FIXES: unique_ptr<int> Q = std::make_unique<int>();
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Q = unique_ptr<int>(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use std::make_unique instead
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// CHECK-FIXES: Q = std::make_unique<int>();
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}
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std::unique_ptr<int> R(new int());
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// Create the unique_ptr as a parameter to a function.
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int T = g(std::unique_ptr<int>(new int()));
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// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: use std::make_unique instead
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// CHECK-FIXES: int T = g(std::make_unique<int>());
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// Only replace if the type in the template is the same as the type returned
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// by the new operator.
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auto Pderived = std::unique_ptr<Base>(new Derived());
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// OK to replace for reset and assign
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Pderived.reset(new Derived());
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// CHECK-MESSAGES: :[[@LINE-1]]:12: warning: use std::make_unique instead
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// CHECK-FIXES: Pderived = std::make_unique<Derived>();
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Pderived = std::unique_ptr<Derived>(new Derived());
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// CHECK-MESSAGES: :[[@LINE-1]]:14: warning: use std::make_unique instead
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// CHECK-FIXES: Pderived = std::make_unique<Derived>();
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// FIXME: OK to replace if assigned to unique_ptr<Base>
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Pderived = std::unique_ptr<Base>(new Derived());
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// FIXME: OK to replace when auto is not used
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std::unique_ptr<Base> PBase = std::unique_ptr<Base>(new Derived());
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// The pointer is returned by the function, nothing to do.
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std::unique_ptr<Base> RetPtr = getPointer();
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// This emulates std::move.
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std::unique_ptr<int> Move = static_cast<std::unique_ptr<int> &&>(P1);
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// Placement arguments should not be removed.
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int *PInt = new int;
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std::unique_ptr<int> Placement = std::unique_ptr<int>(new (PInt) int{3});
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Placement.reset(new (PInt) int{3});
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Placement = std::unique_ptr<int>(new (PInt) int{3});
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}
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// Calling make_smart_ptr from within a member function of a type with a
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// private or protected constructor would be ill-formed.
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class Private {
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private:
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Private(int z) {}
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public:
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Private() {}
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void create() {
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auto callsPublic = std::unique_ptr<Private>(new Private);
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// CHECK-MESSAGES: :[[@LINE-1]]:24: warning: use std::make_unique instead
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// CHECK-FIXES: auto callsPublic = std::make_unique<Private>();
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auto ptr = std::unique_ptr<Private>(new Private(42));
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ptr.reset(new Private(42));
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ptr = std::unique_ptr<Private>(new Private(42));
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}
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virtual ~Private();
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};
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class Protected {
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protected:
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Protected() {}
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public:
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Protected(int, int) {}
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void create() {
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auto callsPublic = std::unique_ptr<Protected>(new Protected(1, 2));
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// CHECK-MESSAGES: :[[@LINE-1]]:24: warning: use std::make_unique instead
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// CHECK-FIXES: auto callsPublic = std::make_unique<Protected>(1, 2);
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auto ptr = std::unique_ptr<Protected>(new Protected);
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ptr.reset(new Protected);
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ptr = std::unique_ptr<Protected>(new Protected);
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}
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};
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void initialization(int T, Base b) {
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// Test different kinds of initialization of the pointee.
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// Direct initialization with parenthesis.
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std::unique_ptr<DPair> PDir1 = std::unique_ptr<DPair>(new DPair(1, T));
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<DPair> PDir1 = std::make_unique<DPair>(1, T);
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PDir1.reset(new DPair(1, T));
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// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use std::make_unique instead
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// CHECK-FIXES: PDir1 = std::make_unique<DPair>(1, T);
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// Direct initialization with braces.
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std::unique_ptr<DPair> PDir2 = std::unique_ptr<DPair>(new DPair{2, T});
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<DPair> PDir2 = std::make_unique<DPair>(2, T);
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PDir2.reset(new DPair{2, T});
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// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use std::make_unique instead
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// CHECK-FIXES: PDir2 = std::make_unique<DPair>(2, T);
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// Aggregate initialization.
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std::unique_ptr<APair> PAggr = std::unique_ptr<APair>(new APair{T, 1});
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<APair> PAggr = std::make_unique<APair>(APair{T, 1});
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PAggr.reset(new APair{T, 1});
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// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use std::make_unique instead
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// CHECK-FIXES: std::make_unique<APair>(APair{T, 1});
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// Test different kinds of initialization of the pointee, when the unique_ptr
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// is initialized with braces.
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// Direct initialization with parenthesis.
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std::unique_ptr<DPair> PDir3 = std::unique_ptr<DPair>{new DPair(3, T)};
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<DPair> PDir3 = std::make_unique<DPair>(3, T);
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// Direct initialization with braces.
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std::unique_ptr<DPair> PDir4 = std::unique_ptr<DPair>{new DPair{4, T}};
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<DPair> PDir4 = std::make_unique<DPair>(4, T);
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// Aggregate initialization.
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std::unique_ptr<APair> PAggr2 = std::unique_ptr<APair>{new APair{T, 2}};
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// CHECK-MESSAGES: :[[@LINE-1]]:35: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<APair> PAggr2 = std::make_unique<APair>(APair{T, 2});
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// Direct initialization with parenthesis, without arguments.
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std::unique_ptr<DPair> PDir5 = std::unique_ptr<DPair>(new DPair());
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<DPair> PDir5 = std::make_unique<DPair>();
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// Direct initialization with braces, without arguments.
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std::unique_ptr<DPair> PDir6 = std::unique_ptr<DPair>(new DPair{});
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<DPair> PDir6 = std::make_unique<DPair>();
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// Aggregate initialization without arguments.
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std::unique_ptr<Empty> PEmpty = std::unique_ptr<Empty>(new Empty{});
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// CHECK-MESSAGES: :[[@LINE-1]]:35: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<Empty> PEmpty = std::make_unique<Empty>(Empty{});
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// Initialization with default constructor.
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std::unique_ptr<E> PE1 = std::unique_ptr<E>(new E{});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<E> PE1 = std::make_unique<E>();
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PE1.reset(new E{});
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PE1 = std::make_unique<E>();
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//============================================================================
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// NOTE: For initlializer-list constructors, the check only gives warnings,
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// and no fixes are generated.
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//============================================================================
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// Initialization with the initializer-list constructor.
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std::unique_ptr<E> PE2 = std::unique_ptr<E>(new E{1, 2});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<E> PE2 = std::unique_ptr<E>(new E{1, 2});
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PE2.reset(new E{1, 2});
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PE2.reset(new E{1, 2});
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// Initialization with default constructor.
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std::unique_ptr<F> PF1 = std::unique_ptr<F>(new F());
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<F> PF1 = std::make_unique<F>();
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PF1.reset(new F());
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PF1 = std::make_unique<F>();
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// Initialization with default constructor.
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std::unique_ptr<F> PF2 = std::unique_ptr<F>(new F{});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<F> PF2 = std::make_unique<F>();
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PF2.reset(new F());
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PF2 = std::make_unique<F>();
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// Initialization with the initializer-list constructor.
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std::unique_ptr<F> PF3 = std::unique_ptr<F>(new F{1});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<F> PF3 = std::unique_ptr<F>(new F{1});
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PF3.reset(new F{1});
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PF3.reset(new F{1});
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// Initialization with the initializer-list constructor.
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std::unique_ptr<F> PF4 = std::unique_ptr<F>(new F{1, 2});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<F> PF4 = std::unique_ptr<F>(new F{1, 2});
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// Initialization with the initializer-list constructor.
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std::unique_ptr<F> PF5 = std::unique_ptr<F>(new F({1, 2}));
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<F> PF5 = std::unique_ptr<F>(new F({1, 2}));
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// Initialization with the initializer-list constructor as the default
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// constructor is not present.
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std::unique_ptr<G> PG1 = std::unique_ptr<G>(new G{});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<G> PG1 = std::unique_ptr<G>(new G{});
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PG1.reset(new G{});
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PG1.reset(new G{});
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// Initialization with the initializer-list constructor.
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std::unique_ptr<G> PG2 = std::unique_ptr<G>(new G{1});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<G> PG2 = std::unique_ptr<G>(new G{1});
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// Initialization with the initializer-list constructor.
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std::unique_ptr<G> PG3 = std::unique_ptr<G>(new G{1, 2});
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<G> PG3 = std::unique_ptr<G>(new G{1, 2});
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std::unique_ptr<H> PH1 = std::unique_ptr<H>(new H({1, 2, 3}));
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<H> PH1 = std::unique_ptr<H>(new H({1, 2, 3}));
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PH1.reset(new H({1, 2, 3}));
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PH1.reset(new H({1, 2, 3}));
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std::unique_ptr<I> PI1 = std::unique_ptr<I>(new I(G({1, 2, 3})));
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<I> PI1 = std::make_unique<I>(G({1, 2, 3}));
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PI1.reset(new I(G({1, 2, 3})));
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use std::make_unique instead
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// CHECK-FIXES: PI1 = std::make_unique<I>(G({1, 2, 3}));
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std::unique_ptr<Foo> FF = std::unique_ptr<Foo>(new Foo());
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// CHECK-MESSAGES: :[[@LINE-1]]:29: warning:
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// CHECK-FIXES: std::unique_ptr<Foo> FF = std::make_unique<Foo>();
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FF.reset(new Foo());
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
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// CHECK-FIXES: FF = std::make_unique<Foo>();
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std::unique_ptr<bar::Bar> BB = std::unique_ptr<bar::Bar>(new bar::Bar());
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning:
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// CHECK-FIXES: std::unique_ptr<bar::Bar> BB = std::make_unique<bar::Bar>();
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BB.reset(new bar::Bar());
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
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// CHECK-FIXES: BB = std::make_unique<bar::Bar>();
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std::unique_ptr<Foo[]> FFs;
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FFs.reset(new Foo[5]);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning:
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// CHECK-FIXES: FFs = std::make_unique<Foo[]>(5);
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FFs.reset(new Foo[5]());
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning:
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// CHECK-FIXES: FFs = std::make_unique<Foo[]>(5);
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const int Num = 1;
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FFs.reset(new Foo[Num]);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning:
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// CHECK-FIXES: FFs = std::make_unique<Foo[]>(Num);
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int Num2 = 1;
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FFs.reset(new Foo[Num2]);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning:
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// CHECK-FIXES: FFs = std::make_unique<Foo[]>(Num2);
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std::unique_ptr<int[]> FI;
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FI.reset(new int[5]);
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
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// CHECK-FIXES: FI = std::make_unique<int[]>(5);
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FI.reset(new int[5]());
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
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// CHECK-FIXES: FI = std::make_unique<int[]>(5);
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FI.reset(new int[Num]);
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
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// CHECK-FIXES: FI = std::make_unique<int[]>(Num);
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FI.reset(new int[Num2]);
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
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// CHECK-FIXES: FI = std::make_unique<int[]>(Num2);
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}
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void aliases() {
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typedef std::unique_ptr<int> IntPtr;
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IntPtr Typedef = IntPtr(new int);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: use std::make_unique instead
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// CHECK-FIXES: IntPtr Typedef = std::make_unique<int>();
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// We use 'bool' instead of '_Bool'.
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typedef std::unique_ptr<bool> BoolPtr;
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BoolPtr BoolType = BoolPtr(new bool);
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// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: use std::make_unique instead
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// CHECK-FIXES: BoolPtr BoolType = std::make_unique<bool>();
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// We use 'Base' instead of 'struct Base'.
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typedef std::unique_ptr<Base> BasePtr;
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BasePtr StructType = BasePtr(new Base);
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// CHECK-MESSAGES: :[[@LINE-1]]:24: warning: use std::make_unique instead
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// CHECK-FIXES: BasePtr StructType = std::make_unique<Base>();
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#define PTR unique_ptr<int>
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std::unique_ptr<int> Macro = std::PTR(new int);
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// CHECK-MESSAGES: :[[@LINE-1]]:32: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<int> Macro = std::make_unique<int>();
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#undef PTR
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std::unique_ptr<int> Using = unique_ptr_<int>(new int);
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// CHECK-MESSAGES: :[[@LINE-1]]:32: warning: use std::make_unique instead
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// CHECK-FIXES: std::unique_ptr<int> Using = std::make_unique<int>();
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}
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void whitespaces() {
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// clang-format off
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auto Space = std::unique_ptr <int>(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: use std::make_unique instead
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// CHECK-FIXES: auto Space = std::make_unique<int>();
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auto Spaces = std :: unique_ptr <int>(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:17: warning: use std::make_unique instead
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// CHECK-FIXES: auto Spaces = std::make_unique<int>();
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// clang-format on
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}
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void nesting() {
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auto Nest = std::unique_ptr<std::unique_ptr<int>>(new std::unique_ptr<int>(new int));
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// CHECK-MESSAGES: :[[@LINE-1]]:15: warning: use std::make_unique instead
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// CHECK-FIXES: auto Nest = std::make_unique<std::unique_ptr<int>>(new int);
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Nest.reset(new std::unique_ptr<int>(new int));
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: use std::make_unique instead
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// CHECK-FIXES: Nest = std::make_unique<std::unique_ptr<int>>(new int);
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Nest->reset(new int);
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// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use std::make_unique instead
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// CHECK-FIXES: *Nest = std::make_unique<int>();
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}
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void reset() {
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std::unique_ptr<int> P;
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P.reset();
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P.reset(nullptr);
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P.reset(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use std::make_unique instead
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// CHECK-FIXES: P = std::make_unique<int>();
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auto Q = &P;
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Q->reset(new int());
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: use std::make_unique instead
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// CHECK-FIXES: *Q = std::make_unique<int>();
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}
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#define DEFINE(...) __VA_ARGS__
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template<typename T>
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void g2(std::unique_ptr<Foo> *t) {
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DEFINE(auto p = std::unique_ptr<Foo>(new Foo); t->reset(new Foo););
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}
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void macro() {
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std::unique_ptr<Foo> *t;
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g2<bar::Bar>(t);
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}
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#undef DEFINE
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class UniqueFoo : public std::unique_ptr<Foo> {
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public:
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void foo() {
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reset(new Foo);
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this->reset(new Foo);
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// CHECK-MESSAGES: :[[@LINE-1]]:11: warning: use std::make_unique instead
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// CHECK-FIXES: *this = std::make_unique<Foo>();
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(*this).reset(new Foo);
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// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: use std::make_unique instead
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// CHECK-FIXES: (*this) = std::make_unique<Foo>();
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}
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};
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// Ignore statements inside a template instantiation.
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template<typename T>
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void template_fun(T* t) {
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std::unique_ptr<T> t2 = std::unique_ptr<T>(new T);
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t2.reset(new T);
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}
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void invoke_template() {
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Foo* foo;
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template_fun(foo);
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}
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