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  }