gcc/testsuite/gcc.dg/tree-ssa/pr81908.c

   1 /* PR 81908 - FAIL: gfortran.dg/alloc_comp_auto_array_2.f90 -O3 -g -m32
   2    { dg-do compile }
   3    { dg-options "-O2 -Wall" } */
   4
   5 #define SIZE_MAX __SIZE_MAX__
   6 typedef __SIZE_TYPE__ size_t;
   7
   8 void f0 (char *d, const char *s, size_t n)
   9 {
  10   if (n > 0 && n <= SIZE_MAX / 2 - 1)
  11     n = 0;
  12
  13   __builtin_memcpy (d, s, n);
  14 }
  15
  16 void f1 (char *d, const char *s, size_t n)
  17 {
  18   if (n > 0 && n <= SIZE_MAX / 2)
  19     n = 0;
  20
  21   __builtin_memcpy (d, s, n);   /* { dg-bogus "\\\[-Wstringop-overflow=]" } */
  22 }
  23
  24 void f2 (char *d, const char *s, size_t n)
  25 {
  26   if (n > 0 && n <= SIZE_MAX / 2 + 1)
  27     n = 0;
  28
  29   __builtin_memcpy (d, s, n);
  30 }
  31
  32 void f3 (char *d, const char *s, size_t n)
  33 {
  34   if (n > 0 && n <= SIZE_MAX - 1)
  35     n = 0;
  36
  37   __builtin_memcpy (d, s, n);   /* { dg-bogus "\\\[-Wstringop-overflow=]" } */
  38 }
  39
  40 void f4 (char *d, const char *s, size_t n)
  41 {
  42   if (n > 0 && n <= SIZE_MAX)
  43     n = 0;
  44
  45   __builtin_memcpy (d, s, n);
  46 }