Implement the GNU semantics for forward declarations of enum types in

C and C++. Fixes PR3688.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66282 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/test/Sema/enum.c b/test/Sema/enum.c
index 55ddb0ddd9..ce49f3064d 100644
--- a/test/Sema/enum.c
+++ b/test/Sema/enum.c
@@ -73,3 +73,14 @@ typedef enum { X = 0 }; // expected-warning{{typedef requires a name}}
 enum NotYetComplete { // expected-note{{definition of 'enum NotYetComplete' is not complete until the closing '}'}}
   NYC1 = sizeof(enum NotYetComplete) // expected-error{{invalid application of 'sizeof' to an incomplete type 'enum NotYetComplete'}}
 };
+
+/// PR3688
+struct s1 {
+  enum e1 (*bar)(void); // expected-warning{{ISO C forbids forward references to 'enum' types}}
+};
+
+enum e1 { YES, NO };
+
+static enum e1 badfunc(struct s1 *q) {
+  return q->bar();
+}