gcc/testsuite/gcc.dg/cpp/19990407-1.c

   1 /* Regression test for a cpplib macro-expansion bug where
   2    `@' becomes `@@' when stringified.  */
   3
   4 /* { dg-do run } */
   5
   6 #include <string.h>
   7 #include <stdlib.h>
   8
   9 #define STR(x) #x
  10
  11 char *a = STR(@foo), *b = "@foo";
  12
  13 int
  14 main(void)
  15 {
  16   if (strcmp (a, b))
  17     abort ();
  18   return 0;
  19 }