Fix rdar://6880874 - [sema] crash on array types with different index sizes

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71634 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/test/Sema/types.c b/test/Sema/types.c
index 3ee76756ee..7ab4e0672c 100644
--- a/test/Sema/types.c
+++ b/test/Sema/types.c
@@ -19,3 +19,14 @@ int b() {
   int __int128_t;
   int __uint128_t;
 }
+
+
+// Array type merging should convert array size to whatever matches the target
+// pointer size.
+// rdar://6880874
+extern int i[1LL];
+int i[(short)1];
+
+enum e { e_1 };
+extern int j[sizeof(enum e)];  // expected-note {{previous definition}}
+int j[42];   // expected-error {{redefinition of 'j' with a different type}}