1 files changed, 15 insertions, 8 deletions
diff --git a/test/Preprocessor/macro_fn_comma_swallow.c b/test/Preprocessor/macro_fn_comma_swallow.c
index 5742591..726a889 100644
--- a/test/Preprocessor/macro_fn_comma_swallow.c
+++ b/test/Preprocessor/macro_fn_comma_swallow.c
@@ -1,21 +1,28 @@
 // Test the GNU comma swallowing extension.
-// RUN: %clang_cc1 %s -E | grep 'foo{A, }'
-// RUN: %clang_cc1 %s -E | grep 'fo2{A,}'
-// RUN: %clang_cc1 %s -E | grep '{foo}'
+// RUN: %clang_cc1 %s -E | FileCheck -strict-whitespace %s
 
+// CHECK: 1: foo{A, }
 #define X(Y) foo{A, Y}
-X()
+1: X()
 
+
+// CHECK: 2: fo2{A,}
 #define X2(Y) fo2{A,##Y}
-X2()
+2: X2()
 
 // should eat the comma.
+// CHECK: 3: {foo}
 #define X3(b, ...) {b, ## __VA_ARGS__}
-X3(foo)
+3: X3(foo)
 
 
 
-// RUN: %clang_cc1 %s -E | grep 'AA BB'
 // PR3880
+// CHECK: 4: AA BB
 #define X4(...)  AA , ## __VA_ARGS__ BB
-X4()
+4: X4()
+
+// PR7943
+// CHECK: 5: 1
+#define X5(x,...) x##,##__VA_ARGS__
+5: X5(1)