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-rw-r--r--gcc/c-family/c-cppbuiltin.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/c-family/c-cppbuiltin.c b/gcc/c-family/c-cppbuiltin.c
index 46c70ac..82ed19d 100644
--- a/gcc/c-family/c-cppbuiltin.c
+++ b/gcc/c-family/c-cppbuiltin.c
@@ -882,6 +882,7 @@ c_cpp_builtins (cpp_reader *pfile)
cpp_define (pfile, "__cpp_nontype_template_args=201411");
cpp_define (pfile, "__cpp_range_based_for=201603");
cpp_define (pfile, "__cpp_constexpr=201603");
+ cpp_define (pfile, "__cpp_if_constexpr=201606");
}
if (flag_concepts)
/* Use a value smaller than the 201507 specified in