gcc/testsuite/gcc.dg/torture/pr115387-1.c

   1 /* Test there is no ICE when compile.  */
   2 /* { dg-do compile } */
   3
   4 #define PRINTF_CHK 0x34
   5
   6 typedef __UINTPTR_TYPE__ uintptr_t;
   7
   8 struct __printf_buffer {
   9   char *write_ptr;
  10   int status;
  11 };
  12
  13 extern void __printf_buffer_init_end (struct __printf_buffer *, char *, char *);
  14
  15 void
  16 test (char *string, unsigned long maxlen, unsigned mode_flags)
  17 {
  18   struct __printf_buffer buf;
  19
  20   if ((mode_flags & PRINTF_CHK) != 0)
  21     {
  22       string[0] = '\0';
  23       uintptr_t end;
  24
  25       if (__builtin_add_overflow ((uintptr_t) string, maxlen, &end))
  26         end = -1;
  27
  28       __printf_buffer_init_end (&buf, string, (char *) end);
  29     }
  30   else
  31     __printf_buffer_init_end (&buf, string, (char *) ~(uintptr_t) 0);
  32
  33   *buf.write_ptr = '\0';
  34 }