1 files changed, 18 insertions, 0 deletions
diff --git a/test/Sema/expr-comma.c b/test/Sema/expr-comma.c
new file mode 100644
index 0000000..6407986
--- /dev/null
+++ b/test/Sema/expr-comma.c
@@ -0,0 +1,18 @@
+// RUN: clang-cc %s -fsyntax-only -verify -std=c89
+// rdar://6095180
+
+#include <assert.h>
+struct s { char c[17]; };
+extern struct s foo(void);
+
+struct s a, b, c;
+
+int A[sizeof((foo().c)) == 17 ? 1 : -1];
+int B[sizeof((a.c)) == 17 ? 1 : -1];
+
+
+// comma does not promote array/function in c90 unless they are lvalues.
+int W[sizeof(0, a.c) == sizeof(char*) ? 1 : -1];
+int X[sizeof(0, (foo().c)) == 17 ? 1 : -1];
+int Y[sizeof(0, (a,b).c) == 17 ? 1 : -1];
+int Z[sizeof(0, (a=b).c) == 17 ? 1 : -1];