Tested x86_64-pc-linux-gnu, applying to trunk.
-- 8< --
There have been various problems with -std=c++14 -fconcepts; let's stop
defining the feature test macro in that case.
gcc/c-family/ChangeLog:
* c-cppbuiltin.cc (c_cpp_builtins): Don't define __cpp_concepts
before C++17.
---
gcc/c-family/c-cppbuiltin.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/c-family/c-cppbuiltin.cc b/gcc/c-family/c-cppbuiltin.cc
index 73a07055a86..b37a4c09792 100644
--- a/gcc/c-family/c-cppbuiltin.cc
+++ b/gcc/c-family/c-cppbuiltin.cc
@@ -1102,7 +1102,7 @@ c_cpp_builtins (cpp_reader *pfile)
cpp_define (pfile, "__cpp_deleted_function=202403L");
cpp_define (pfile, "__cpp_variadic_friend=202403L");
}
- if (flag_concepts)
+ if (flag_concepts && cxx_dialect > cxx14)
cpp_define (pfile, "__cpp_concepts=202002L");
if (flag_contracts)
{
base-commit: 1b7cfa715c6c02db6ef587c87757d7792fc43423
--
2.46.2
