gcc/testsuite/gcc.dg/cpp/redef2.c

   1 /* Test for redefining macros with significant differences.  */
   2
   3 /* { dg-do preprocess }
   4    { dg-options "-ansi -Wall -fno-show-column" } */
   5
   6 #define mac(a, b) (a) + (b)
   7 #define mac(a, b) (a) * (b)
   8 #define mac(a, b) (a) * (x)
   9 #define mac(a, g) (a) * (x)
  10
  11 #define ro(x) foo x bar
  12 #define ro(x, b) foo x bar
  13
  14 #define va(a...) a
  15 #define va(...) __VA_ARGS__
  16
  17 #define foo(x) x
  18 #define foo(x)x         /* { dg-bogus "redefined" "redefined foo" } */
  19
  20 /* { dg-warning "redefined" "redef mac"     { target *-*-* } 7  }
  21    { dg-warning "redefined" "redef mac"     { target *-*-* } 8  }
  22    { dg-warning "redefined" "redef mac"     { target *-*-* } 9  }
  23    { dg-warning "redefined" "redef ro"      { target *-*-* } 12 }
  24    { dg-warning "redefined" "redef va"      { target *-*-* } 15 }
  25
  26    { dg-warning "previous"  "prev def mac"  { target *-*-* } 6  }
  27    { dg-warning "previous"  "prev def mac"  { target *-*-* } 7  }
  28    { dg-warning "previous"  "prev def mac"  { target *-*-* } 8  }
  29    { dg-warning "previous"  "prev def ro"   { target *-*-* } 11 }
  30    { dg-warning "previous"  "prev def va"   { target *-*-* } 14 }
  31 */