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TheRock/compiler/amd-llvm/clang/test/Parser/cxx2a-template-lambdas.cpp
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

43 lines
1.6 KiB
C++

// RUN: %clang_cc1 -std=c++23 %s -verify
// RUN: %clang_cc1 -std=c++20 %s -verify
auto L0 = []<> { }; //expected-error {{cannot be empty}}
auto L1 = []<typename T1, typename T2> { };
auto L2 = []<typename T1, typename T2>(T1 arg1, T2 arg2) -> T1 { };
auto L3 = []<typename T>(auto arg) { T t; };
auto L4 = []<int I>() { };
// http://llvm.org/PR49736
auto L5 = []<auto>(){};
auto L6 = []<auto>{};
auto L7 = []<auto>() noexcept {};
auto L8 = []<auto> noexcept {};
#if __cplusplus <= 202002L
// expected-warning@-2 {{lambda without a parameter clause is a C++23 extension}}
#endif
auto L9 = []<auto> requires true {};
auto L10 = []<auto> requires true(){};
auto L11 = []<auto> requires true() noexcept {};
auto L12 = []<auto> requires true noexcept {};
#if __cplusplus <= 202002L
// expected-warning@-2 {{is a C++23 extension}}
#endif
auto L13 = []<auto>() noexcept requires true {};
auto L14 = []<auto> requires true() noexcept requires true {};
auto XL0 = []<auto> noexcept requires true {}; // expected-error {{expected body of lambda expression}}
auto XL1 = []<auto> requires true noexcept requires true {}; // expected-error {{expected body}}
#if __cplusplus <= 202002L
// expected-warning@-3 {{is a C++23 extension}}
// expected-warning@-3 {{is a C++23 extension}}
#endif
namespace GH64962 {
void f() {
[] <typename T>(T i) -> int[] // expected-error {{function cannot return array type 'int[]'}}
// extension-warning {{explicit template parameter list for lambdas is a C++20 extension}}
{ return 3; } (v); // expected-error {{use of undeclared identifier 'v'}}
}
}