gcc/testsuite/gcc.dg/torture/pr47917.c

   1 /* { dg-do run } */
   2 /* { dg-options "-std=c99" } */
   3 /* { dg-options "-std=gnu99" { target *-*-hpux* } } */
   4 /* { dg-additional-options "-D__USE_MINGW_ANSI_STDIO=1" { target *-*-mingw* } } */
   5 /* { dg-xfail-run-if "non-conforming C99 snprintf" { *-*-hpux11.[012]* } { "-O0" } } */
   6
   7 /* PR middle-end/47917 */
   8
   9 #include <stdio.h>
  10 extern int memcmp (const void *, const void *, __SIZE_TYPE__);
  11 extern void abort (void);
  12
  13 char buf1[6], buf2[6], buf3[4], buf4[4];
  14 int i;
  15
  16 int
  17 foo (void)
  18 {
  19   int ret = snprintf (buf1, sizeof buf1, "abcde");
  20   ret += snprintf (buf2, sizeof buf2, "abcdef") * 16;
  21   ret += snprintf (buf3, sizeof buf3, "%s", i++ < 6 ? "abc" : "def") * 256;
  22   ret += snprintf (buf4, sizeof buf4, "%s", i++ > 10 ? "abcde" : "defgh") * 4096;
  23   return ret;
  24 }
  25
  26 int
  27 main (void)
  28 {
  29   if (foo () != 5 + 6 * 16 + 3 * 256 + 5 * 4096)
  30     abort ();
  31   if (memcmp (buf1, "abcde", 6) != 0
  32       || memcmp (buf2, "abcde", 6) != 0
  33       || memcmp (buf3, "abc", 4) != 0
  34       || memcmp (buf4, "def", 4) != 0
  35       || i != 2)
  36     abort ();
  37   return 0;
  38 }