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-rw-r--r--test/Lexer/has_feature_c1x.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/test/Lexer/has_feature_c1x.c b/test/Lexer/has_feature_c1x.c
index ca4e9b95ad..a502f16ce3 100644
--- a/test/Lexer/has_feature_c1x.c
+++ b/test/Lexer/has_feature_c1x.c
@@ -27,3 +27,12 @@ int no_alignas();
// CHECK-1X: has_alignas
// CHECK-NO-1X: no_alignas
+
+#if __STDC_VERSION__ > 199901L
+int is_c1x();
+#else
+int is_not_c1x();
+#endif
+
+// CHECK-1X: is_c1x
+// CHECK-NO-1X: is_not_c1x