clang/test/SemaCXX/warn-unused-label-error.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -Wunused-variable -Wunused-label -verify %s
   2
   3 static int unused_local_static;
   4
   5 namespace PR8455 {
   6   void f() {
   7     A: // expected-warning {{unused label 'A'}}
   8       __attribute__((unused)) int i; // attribute applies to variable
   9     B: // attribute applies to label
  10       __attribute__((unused)); int j; // expected-warning {{unused variable 'j'}}
  11   }
  12
  13   void g() {
  14     C: // unused label 'C' will not appear here because an error has occurred
  15       __attribute__((unused)) // expected-error {{an attribute list cannot appear here}}
  16       #pragma weak unused_local_static
  17       ;
  18   }
  19
  20   void h() {
  21   D:
  22 #pragma weak unused_local_static
  23     __attribute__((unused)) // expected-error {{'unused' attribute cannot be applied to a statement}}
  24     ;
  25   }
  26 }