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-rw-r--r--gcc/c-family/c-cppbuiltin.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/c-family/c-cppbuiltin.c b/gcc/c-family/c-cppbuiltin.c
index a299273..60e9e05 100644
--- a/gcc/c-family/c-cppbuiltin.c
+++ b/gcc/c-family/c-cppbuiltin.c
@@ -1052,7 +1052,8 @@ c_cpp_builtins (cpp_reader *pfile)
cpp_define (pfile, "__cpp_init_captures=201803L");
cpp_define (pfile, "__cpp_generic_lambdas=201707L");
cpp_define (pfile, "__cpp_designated_initializers=201707L");
- cpp_define (pfile, "__cpp_constexpr=201907L");
+ if (cxx_dialect <= cxx20)
+ cpp_define (pfile, "__cpp_constexpr=201907L");
cpp_define (pfile, "__cpp_constexpr_in_decltype=201711L");
cpp_define (pfile, "__cpp_conditional_explicit=201806L");
cpp_define (pfile, "__cpp_consteval=201811L");
@@ -1071,6 +1072,7 @@ c_cpp_builtins (cpp_reader *pfile)
/* Set feature test macros for C++23. */
cpp_define (pfile, "__cpp_size_t_suffix=202011L");
cpp_define (pfile, "__cpp_if_consteval=202106L");
+ cpp_define (pfile, "__cpp_constexpr=202110L");
}
if (flag_concepts)
{