clang/test/SemaCXX/warn-once-on-unknown-attr.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11
   2 // RUN: %clang_cc1 -fsyntax-only -verify -std=c2x -x c %s
   3 void foo() {
   4   int [[attr]] i;             // expected-warning {{unknown attribute 'attr' ignored}}
   5   (void)sizeof(int [[attr]]); // expected-warning {{unknown attribute 'attr' ignored}}
   6 }
   7
   8 void bar() {
   9   [[attr]];       // expected-warning {{unknown attribute 'attr' ignored}}
  10   [[attr]] int i; // expected-warning {{unknown attribute 'attr' ignored}}
  11 }