gcc/testsuite/gcc.dg/nonnull-3.c

   1 /* Test for the "nonnull" function attribute on builtins.  Use the
   2    "__builtin_" style below so we don't need prototypes.  */
   3 /* Origin: Kaveh R. Ghazi <ghazi@caip.rutgers.edu> */
   4 /* { dg-do compile } */
   5 /* { dg-options "-Wnonnull" } */
   6
   7 #include <stddef.h>
   8
   9 void
  10 foo (void *p, char *s)
  11 {
  12   __builtin_bzero (NULL, 0);
  13   __builtin_bcopy (NULL, p, 0);
  14   __builtin_bcopy (p, NULL, 0);
  15   __builtin_bcmp (NULL, p, 0);
  16   __builtin_bcmp (p, NULL, 0);
  17   __builtin_index (NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  18   __builtin_rindex (NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  19
  20   __builtin_memcpy (p, NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  21   __builtin_memcpy (NULL, p, 16);  /* { dg-warning "null" "null pointer check" } */
  22   __builtin_memmove (p, NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  23   __builtin_memmove (NULL, p, 16);  /* { dg-warning "null" "null pointer check" } */
  24   __builtin_memcmp (p, NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  25   __builtin_memcmp (NULL, p, 16);  /* { dg-warning "null" "null pointer check" } */
  26   __builtin_memset (NULL, 0, 16);  /* { dg-warning "null" "null pointer check" } */
  27   __builtin_mempcpy (p, NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  28   __builtin_mempcpy (NULL, p, 16);  /* { dg-warning "null" "null pointer check" } */
  29
  30   __builtin_strcat (NULL, s);  /* { dg-warning "null" "null pointer check" } */
  31   __builtin_strcat (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  32   __builtin_strncat (NULL, s, 16);  /* { dg-warning "null" "null pointer check" } */
  33   __builtin_strncat (s, NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  34   __builtin_stpcpy (NULL, s);  /* { dg-warning "null" "null pointer check" } */
  35   __builtin_stpcpy (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  36   __builtin_strcpy (NULL, s);  /* { dg-warning "null" "null pointer check" } */
  37   __builtin_strcpy (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  38   __builtin_strncpy (NULL, s, 16);  /* { dg-warning "null" "null pointer check" } */
  39   __builtin_strncpy (s, NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  40   __builtin_strcmp (NULL, s);  /* { dg-warning "null" "null pointer check" } */
  41   __builtin_strcmp (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  42   __builtin_strncmp (NULL, s, 16);  /* { dg-warning "null" "null pointer check" } */
  43   __builtin_strncmp (s, NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  44   __builtin_strlen (NULL);  /* { dg-warning "null" "null pointer check" } */
  45   __builtin_strstr (NULL, s);  /* { dg-warning "null" "null pointer check" } */
  46   __builtin_strstr (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  47   __builtin_strpbrk (NULL, s);  /* { dg-warning "null" "null pointer check" } */
  48   __builtin_strpbrk (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  49   __builtin_strspn (NULL, s);  /* { dg-warning "null" "null pointer check" } */
  50   __builtin_strspn (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  51   __builtin_strchr (NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  52   __builtin_strrchr (NULL, 16);  /* { dg-warning "null" "null pointer check" } */
  53   __builtin_strdup (NULL);  /* { dg-warning "null" "null pointer check" } */
  54
  55   __builtin_nan (NULL);  /* { dg-warning "null" "null pointer check" } */
  56   __builtin_nanf (NULL);  /* { dg-warning "null" "null pointer check" } */
  57   __builtin_nanl (NULL);  /* { dg-warning "null" "null pointer check" } */
  58   __builtin_nans (NULL);  /* { dg-warning "null" "null pointer check" } */
  59   __builtin_nansf (NULL);  /* { dg-warning "null" "null pointer check" } */
  60   __builtin_nansl (NULL);  /* { dg-warning "null" "null pointer check" } */
  61
  62   __builtin_puts (NULL);  /* { dg-warning "null" "null pointer check" } */
  63   __builtin_fputc (*s, NULL);  /* { dg-warning "null" "null pointer check" } */
  64   __builtin_fputs (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  65   __builtin_fputs (NULL, p);  /* { dg-warning "null" "null pointer check" } */
  66   __builtin_fwrite (s, 16, 16, NULL);  /* { dg-warning "null" "null pointer check" } */
  67   __builtin_fwrite (NULL, 16, 16, p);  /* { dg-warning "null" "null pointer check" } */
  68   __builtin_puts_unlocked (NULL);  /* { dg-warning "null" "null pointer check" } */
  69   __builtin_fputc_unlocked (*s, NULL);  /* { dg-warning "null" "null pointer check" } */
  70   __builtin_fputs_unlocked (s, NULL);  /* { dg-warning "null" "null pointer check" } */
  71   __builtin_fputs_unlocked (NULL, p);  /* { dg-warning "null" "null pointer check" } */
  72   __builtin_fwrite_unlocked (s, 16, 16, NULL);  /* { dg-warning "null" "null pointer check" } */
  73   __builtin_fwrite_unlocked (NULL, 16, 16, p);  /* { dg-warning "null" "null pointer check" } */
  74
  75 }