gcc/testsuite/gcc.c-torture/execute/pr36321.c

   1 /* { dg-skip-if "requires alloca" { ! alloca } { "-O0" } { "" } } */
   2 extern void abort (void);
   3
   4 extern __SIZE_TYPE__ strlen (const char *);
   5 void foo(char *str)
   6 {
   7   int len2 = strlen (str);
   8   char *a = (char *) __builtin_alloca (0);
   9   char *b = (char *) __builtin_alloca (len2*3);
  10
  11   if ((int) (a-b) < (len2*3))
  12     {
  13 #ifdef _WIN32
  14       abort ();
  15 #endif
  16       return;
  17     }
  18 }
  19
  20 static char * volatile argp = "pr36321.x";
  21
  22 int main(int argc, char **argv)
  23 {
  24   foo (argp);
  25   return 0;
  26 }
  27