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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-4255] libstdc++: Detect miscompilation of src/c++11/limits.cc Date: Fri, 8 Oct 2021 14:51:16 +0000 (GMT) [thread overview] Message-ID: <20211008145116.038B1385840C@sourceware.org> (raw) https://gcc.gnu.org/g:e6f6972b5f4711c110fa753c926df49415f230da commit r12-4255-ge6f6972b5f4711c110fa753c926df49415f230da Author: Jonathan Wakely <jwakely@redhat.com> Date: Fri Oct 8 14:45:23 2021 +0100 libstdc++: Detect miscompilation of src/c++11/limits.cc Add a #error directive to ensure that the definitions are not compiled as C++17, which would prevent them being emitted. libstdc++-v3/ChangeLog: PR libstdc++/98725 * src/c++11/limits.cc: Fail if __cpp_inline_variables is defined. Diff: --- libstdc++-v3/src/c++11/limits.cc | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libstdc++-v3/src/c++11/limits.cc b/libstdc++-v3/src/c++11/limits.cc index 21d4427f10b..585cb8c92db 100644 --- a/libstdc++-v3/src/c++11/limits.cc +++ b/libstdc++-v3/src/c++11/limits.cc @@ -29,6 +29,10 @@ // 18.2.1 // +#if __cpp_inline_variables +# error This file must be compiled as C++11 or C++14 +#endif + #include <limits> namespace std _GLIBCXX_VISIBILITY(default)
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