Make sure methods with no return type default to "id".

This fixes a crasher in Sema::MatchTwoMethodDeclarations(), identified by selector-overload.m (just added).

Added Action::ActOnTranslationUnitScope() and renamed Action::PopScope to ActOnPopScope.

Added a Translation Unit Scope instance variable to Sema (will be very useful to ObjC-related actions, since ObjC declarations are always file-scoped).

llvm-svn: 42817

1 files changed, 43 insertions, 0 deletions

diff --git a/clang/test/Sema/selector-overload.m b/clang/test/Sema/selector-overload.m
new file mode 100644
index 00000000000..8b433a48030
--- /dev/null
+++ b/clang/test/Sema/selector-overload.m
@@ -0,0 +1,43 @@
+// RUN: clang %s -parse-ast
+#import <Foundation/NSObject.h>
+
+struct D {
+  double d;
+};
+
+@interface Foo : NSObject 
+
+- method:(int)a;
+- method:(int)a;
+
+@end
+
+@interface Bar : NSObject 
+
+- method:(void *)a;
+
+@end
+
+@interface Car : NSObject 
+
+- method:(struct D)a;
+
+@end
+
+@interface Zar : NSObject 
+
+- method:(float)a;
+
+@end
+
+@interface Rar : NSObject 
+
+- method:(float)a;
+
+@end
+
+int main() {
+//  id xx = [[Car alloc] init];
+
+//  [xx method:4];
+}