Implement the GNU semantics for forward declarations of enum types in

C and C++. Fixes PR3688.

llvm-svn: 66282

1 files changed, 15 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/enum.cpp b/clang/test/SemaCXX/enum.cpp
index 7626e4ab695..c7748c31ba0 100644
--- a/clang/test/SemaCXX/enum.cpp
+++ b/clang/test/SemaCXX/enum.cpp
@@ -23,3 +23,18 @@ void bar() {
 	Foo myvar = A;
 	myvar = B;
 }
+
+/// PR3688
+struct s1 {
+  enum e1 (*bar)(void); // expected-error{{ISO C++ forbids forward references to 'enum' types}}
+};
+
+enum e1 { YES, NO };
+
+static enum e1 badfunc(struct s1 *q) {
+  // FIXME: the message below should probably give context information
+  // in those types.
+  return q->bar(); // expected-error{{incompatible type returning 'enum e1', expected 'enum e1'}}
+}
+
+enum e2; // expected-error{{ISO C++ forbids forward references to 'enum' types}}