Make sure all of the isUnsigned flags line up when comparing initializer values, to really really fix PR clang/3377

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62858 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/designated-initializers.c b/test/Sema/designated-initializers.c
index 8e5bd43..3fe5f84 100644
--- a/test/Sema/designated-initializers.c
+++ b/test/Sema/designated-initializers.c
@@ -115,3 +115,4 @@
 
 // PR clang/3377
 int bitwidth[] = { [(long long int)1] = 5, [(short int)2] = 2 };
+int a[]= { [sizeof(int)] = 0 };