When defining a forward-declared enum, don't try to attach the definition to

a previous declaration if the redeclaration is invalid. That way lies madness.
Fixes a crash-on-invalid reported by Abramo.

llvm-svn: 153349

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/enum-scoped.cpp b/clang/test/SemaCXX/enum-scoped.cpp
index 31190bebaa3..44394296e37 100644
--- a/clang/test/SemaCXX/enum-scoped.cpp
+++ b/clang/test/SemaCXX/enum-scoped.cpp
@@ -189,3 +189,14 @@ namespace test7 {
   enum class E { e = (struct S*)0 == (struct S*)0 };
   S *p;
 }
+
+namespace test8 {
+  template<typename T> struct S {
+    enum A : int; // expected-note {{here}}
+    enum class B; // expected-note {{here}}
+    enum class C : int; // expected-note {{here}}
+  };
+  template<typename T> enum S<T>::A { a }; // expected-error {{previously declared with fixed underlying type}}
+  template<typename T> enum class S<T>::B : char { b }; // expected-error {{redeclared with different underlying}}
+  template<typename T> enum S<T>::C : int { c }; // expected-error {{previously declared as scoped}}
+}