In c99 mode, comma does do function/array promotion even though

it does not do unary promotions (like short->int).

llvm-svn: 54058

1 files changed, 11 insertions, 4 deletions

diff --git a/clang/test/Sema/expr-comma.c b/clang/test/Sema/expr-comma.c
index 7a601e9b3d6..4949ee3a83f 100644
--- a/clang/test/Sema/expr-comma.c
+++ b/clang/test/Sema/expr-comma.c
@@ -1,11 +1,18 @@
-// RUN: clang %s -fsyntax-only -verify
+// RUN: clang %s -fsyntax-only -verify -std=c99
 // rdar://6095180
 
 #include <assert.h>
 struct s { char c[17]; };
-extern struct s foo (void);
+extern struct s foo(void);
 
-// sizeof 'c' should be 17, not sizeof(char*).
-int X[sizeof(0, (foo().c)) == 17 ? 1 : -1];
+struct s a, b, c;
 
+int A[sizeof((foo().c)) == 17 ? 1 : -1];
+int B[sizeof((a.c)) == 17 ? 1 : -1];
+
+
+// comma does array/function promotion in c99.
+int X[sizeof(0, (foo().c)) == sizeof(char*) ? 1 : -1];
+int Y[sizeof(0, (a,b).c) == sizeof(char*) ? 1 : -1];
+int Z[sizeof(0, (a=b).c) == sizeof(char*) ? 1 : -1];