// If this is an undefined enum, warn.
if (TUK != TUK_Definition && !Invalid) {
TagDecl *Def;
- if (IsFixed && (getLangOpts().CPlusPlus11 || getLangOpts().ObjC) &&
- cast<EnumDecl>(New)->isFixed()) {
+ if (IsFixed && cast<EnumDecl>(New)->isFixed()) {
// C++0x: 7.2p2: opaque-enum-declaration.
// Conflicts are diagnosed above. Do nothing.
}
// RUN: %clang_cc1 -Weverything -xc++ -std=c++03 -DCXX03 -verify %s
// RUN: %clang_cc1 -Weverything -xobjective-c -DOBJC -verify %s
// RUN: %clang_cc1 -Weverything -std=c11 -xc -DC11 -verify %s
+// RUN: %clang_cc1 -pedantic -std=c11 -xc -DC11 -verify %s
// RUN: %clang_cc1 -Weverything -std=c11 -xc -fms-extensions -DMS -verify %s
enum X : int {e};
#elif defined(CXX03)
// expected-warning@-4{{enumeration types with a fixed underlying type are a C++11 extension}}
#elif defined(OBJC)
-// expected-no-diagnostics
+// No diagnostic
#elif defined(C11)
// expected-warning@-8{{enumeration types with a fixed underlying type are a Clang extension}}
#elif defined(MS)
// expected-warning@-10{{enumeration types with a fixed underlying type are a Microsoft extension}}
#endif
+
+// Don't warn about the forward declaration in any language mode.
+enum Fwd : int;
+enum Fwd : int { e2 };
+#ifndef OBJC
+// expected-warning@-3 {{enumeration types with a fixed underlying type}}
+// expected-warning@-3 {{enumeration types with a fixed underlying type}}
+#endif
+
+// Always error on the incompatible redeclaration.
+enum BadFwd : int;
+#ifndef OBJC
+// expected-warning@-2 {{enumeration types with a fixed underlying type}}
+#endif
+// expected-note@-4 {{previous declaration is here}}
+enum BadFwd : char { e3 };
+#ifndef OBJC
+// expected-warning@-2 {{enumeration types with a fixed underlying type}}
+#endif
+// expected-error@-4 {{enumeration redeclared with different underlying type 'char' (was 'int')}}