Fix rdar://6095136, various crashes with incomplete enum types.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54074 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/enum.c b/test/Sema/enum.c
index 2a20d3d..8d184d3 100644
--- a/test/Sema/enum.c
+++ b/test/Sema/enum.c
@@ -33,3 +33,18 @@
union u0; // expected-error {{previous use is here}}
enum u0 { U0A }; // expected-error {{error: use of 'u0' with tag type that does not match previous declaration}}
+
+// rdar://6095136
+extern enum some_undefined_enum ve2; // expected-warning {{ISO C forbids forward references to 'enum' types}}
+
+void test4() {
+ for (; ve2;) // expected-error {{statement requires expression of scalar type}}
+ ;
+ (_Bool)ve2; // expected-error {{statement requires expression of scalar type}}
+
+ for (; ;ve2)
+ ;
+ (void)ve2;
+ ve2;
+}
+