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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 6c0fb212cce3..ca4e9b95ad04 100644
--- a/test/Lexer/has_feature_c1x.c
+++ b/test/Lexer/has_feature_c1x.c
@@ -18,3 +18,12 @@ int no_generic_selections();
// CHECK-1X: has_generic_selections
// CHECK-NO-1X: no_generic_selections
+
+#if __has_feature(c_alignas)
+int has_alignas();
+#else
+int no_alignas();
+#endif
+
+// CHECK-1X: has_alignas
+// CHECK-NO-1X: no_alignas