clang/test/SemaObjC/receiver-forward-class.m

   1 // RUN: %clang_cc1 -fsyntax-only -Wreceiver-forward-class -verify %s
   2 // RUN: %clang_cc1 -x objective-c++ -fsyntax-only  -Wreceiver-forward-class -verify %s
   3 // rdar://10686120
   4
   5 @class A; // expected-note {{forward declaration of class here}}
   6
   7 @interface B
   8 -(int) width; // expected-note {{using}}
   9 @end
  10 @interface C
  11 -(float) width; // expected-note {{also found}}
  12 @end
  13
  14 int f0(A *x) {
  15   return [x width]; // expected-warning {{receiver type 'A' for instance message is a forward declaration}} \
  16                     // expected-warning {{multiple methods named 'width' found}} \
  17                     // expected-note {{receiver is treated with 'id' type for purpose of method lookup}}
  18 }
  19