27 lines
978 B
C++
27 lines
978 B
C++
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// RUN: %clang_cc1 -std=c++20 -emit-llvm -triple x86_64-unknown-linux-gnu -o - %s | FileCheck %s
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// RUN: %clang_cc1 -std=c++17 -emit-llvm -triple x86_64-unknown-linux-gnu -o - %s | FileCheck %s
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// RUN: %clang_cc1 -std=c++14 -emit-llvm -triple x86_64-unknown-linux-gnu -o - %s | FileCheck %s
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// RUN: %clang_cc1 -std=c++11 -emit-llvm -triple x86_64-unknown-linux-gnu -o - %s | FileCheck %s
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// - volatile object in return statement don't match the rule for using move
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// operation instead of copy operation. Thus should call the copy constructor
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// A(const volatile A &).
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//
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// - volatile object in return statement also don't match the rule for copy
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// elision. Thus the copy constructor A(const volatile A &) cannot be elided.
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namespace test_volatile {
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class A {
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public:
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A() {}
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~A() {}
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A(const volatile A &);
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A(volatile A &&);
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};
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A test() {
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volatile A a_copy;
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// CHECK: call void @_ZN13test_volatile1AC1ERVKS0_
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return a_copy;
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}
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} // namespace test_volatile
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