gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c

   1 // { dg-do preprocess }
   2 // { dg-options "-std=gnu99 -fdiagnostics-show-option -Werror=builtin-macro-redefined" }
   3 /* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */
   4 #ifndef __TIME__
   5 #error "__TIME__ builtin is not defined"
   6 // { dg-bogus "__TIME__ builtin is not defined" "no-time" { target *-*-* } 5 }
   7 #endif
   8
   9 #define __TIME__ "X"  // { dg-error "\"__TIME__\" redefined .-Werror=builtin-macro-redefined." }
  10
  11 #define __TIME__ "Y"  // { dg-bogus "-Wbuiltin-macro-redefined" }
  12                       // { dg-warning "\"__TIME__\" redefined" "not-builtin-1" { target *-*-* } 11 }
  13                       // { dg-message "previous definition" "previous-1" { target *-*-* } 9 }
  14
  15 #define X "X"
  16 #define X "Y"         // { dg-bogus "-Wbuiltin-macro-redefined" }
  17                       // { dg-warning "\"X\" redefined" "not-builtin-2" { target *-*-* } 16 }
  18                       // { dg-message "previous definition" "previous-2" { target *-*-* } 15 }