gnu/dist/gcc4/gcc/testsuite/gcc.dg/cpp/poison.c

   1 /* { dg-do preprocess }
   2    { dg-options "-fno-show-column" } */
   3
   4 #pragma GCC poison foo
   5 foo                     /* { dg-error "foo" "use of foo" } */
   6 #pragma GCC poison foo2 foo3
   7 foo2                    /* { dg-error "foo2" "use of foo2" } */
   8 foo3                    /* { dg-error "foo3" "use of foo3" } */
   9 #pragma GCC poison      foo4    foo5
  10 foo4                    /* { dg-error "foo4" "use of foo4" } */
  11 foo5                    /* { dg-error "foo5" "use of foo5" } */
  12 #pragma GCC poison +++  /* { dg-error "invalid" "poison non-identifier" } */
  13 #define foo6 123
  14 #pragma GCC poison foo6 /* { dg-warning "foo6" "poison defined macro" } */
  15 #define foo6 345        /* { dg-error "foo6" "def of foo6" } */
  16 #define foo6 456        /* { dg-error "foo6" "redef of foo6" } */
  17 #ifdef foo6             /* { dg-error "foo6" "#ifdef foo6" } */
  18 #error hey! foo6 defined!
  19 #endif
  20 #if defined(foo6)       /* { dg-error "foo6" "#if defined foo6" } */
  21 #error foo6 still defined!
  22 #else
  23 foo6                    /* { dg-error "foo6" "use of foo6" } */
  24 #endif
  25 #pragma GCC poison