[clang] concepts/require crash clang

[kikaxa]

In frontend, according to the detection guide.

Reproducible on macos and most new/old clang versions i tried on godbolt(18-21), gcc works all right.

1.cpp

Compiler stderr
gmake[2]: *** [CMakeFiles/StdAnyTest.dir/build.make:79: CMakeFiles/StdAnyTest.dir/main.cpp.o] Segmentation fault (core dumped)

clang: error: unable to execute command: Illegal instruction: 4
clang: error: clang frontend command failed due to signal (use -v to see invocation)
Apple clang version 16.0.0 (clang-1600.0.26.4)

1-a445e2.sh
1-a445e2.cpp

[EugeneZelenko]

Could you please try 21 or main branch of LLVM, not Apple code?

[kikaxa]

Reproducible on macos and most new/old clang versions i tried on godbolt(18-21)

x86-64 clang 21.1.0 on goldbolt

[EugeneZelenko]

Reproducible on macos and most new/old clang versions i tried on godbolt(18-21)

x86-64 clang 21.1.0 on goldbolt

Please provide relevant link here.

[frederick-vs-ja]

Reduced example (Godbolt link)

#include <utility>

template<class X>
void run(const X&&) {}

template<class T = void>
concept RefRunnable = requires {
  [](decltype([]{}) f) -> decltype(::run(std::move(f))) { };
};

static_assert(RefRunnable<void>);

[llvmbot]

@llvm/issue-subscribers-clang-codegen

Author: None (kikaxa)

In frontend, according to the detection guide.

Reproducible on macos and most new/old clang versions i tried on godbolt(18-21), gcc works all right.

1.cpp

Compiler stderr
gmake[2]: *** [CMakeFiles/StdAnyTest.dir/build.make:79: CMakeFiles/StdAnyTest.dir/main.cpp.o] Segmentation fault (core dumped)

clang: error: unable to execute command: Illegal instruction: 4
clang: error: clang frontend command failed due to signal (use -v to see invocation)
Apple clang version 16.0.0 (clang-1600.0.26.4)

1-a445e2.sh
1-a445e2.cpp

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: None (kikaxa)

In frontend, according to the detection guide.

Reproducible on macos and most new/old clang versions i tried on godbolt(18-21), gcc works all right.

1.cpp

Compiler stderr
gmake[2]: *** [CMakeFiles/StdAnyTest.dir/build.make:79: CMakeFiles/StdAnyTest.dir/main.cpp.o] Segmentation fault (core dumped)

clang: error: unable to execute command: Illegal instruction: 4
clang: error: clang frontend command failed due to signal (use -v to see invocation)
Apple clang version 16.0.0 (clang-1600.0.26.4)

1-a445e2.sh
1-a445e2.cpp