gcc/testsuite/c-c++-common/Wmemset-transposed-args1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wall" } */
   3
   4 typedef __SIZE_TYPE__ size_t;
   5 extern
   6 #ifdef __cplusplus
   7 "C"
   8 #endif
   9 void *memset (void *, int, size_t);
  10 char buf[1024];
  11
  12 void
  13 foo ()
  14 {
  15   memset (buf, sizeof buf, 0);  /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  16   memset (buf, sizeof buf, '\0'); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  17   memset (buf, sizeof buf, L'\0'); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  18   memset (buf, 1, 1 - 1);
  19   memset (buf, 1, 0 - 0);
  20   memset (buf, 0, 0);
  21   memset (buf, '\0', 0);
  22   memset (buf, L'\0', 0);
  23   memset (buf, 1 - 1, 0); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  24   memset (buf, 0 - 0, 0); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  25   memset (buf, sizeof buf, 0L); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  26   memset (buf, sizeof buf, 0UL); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  27   memset (buf, sizeof buf, 0LL); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  28   memset (buf, sizeof buf, 0ULL); /* { dg-warning ".memset. used with constant zero length parameter; this could be due to transposed parameters" } */
  29   memset (buf, sizeof buf, (int) 0);
  30   memset (buf, sizeof buf, -0);
  31 }