Fix an Objective-C crasher, PR7839.

llvm-svn: 110515

clang/lib/Sema/SemaDeclObjC.cpp

@@ -1532,7 +1532,8 @@ Sema::DeclPtrTy Sema::ActOnMethodDeclaration(
       Param->setInvalidDecl();
     }
     Param->setDeclContext(ObjCMethod);
-    IdResolver.RemoveDecl(Param);
+    if (Param->getDeclName())
+      IdResolver.RemoveDecl(Param);
     Params.push_back(Param);
   }
   

clang/test/SemaObjC/protocols.m

@@ -61,3 +61,7 @@
 @protocol B < A > // expected-error{{protocol has circular dependency}}
 @end
 
+@protocol P
+- (int)test:(int)param, ..; // expected-warning{{type specifier missing}} \
+                      // expected-error{{expected ';' after method prototype}}
+@end