gcc/testsuite/gcc.dg/pr104380.c

   1 /* PR target/104380 */
   2 /* This test needs runtime that provides __*_chk functions.  */
   3 /* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
   4 /* { dg-options "-O2 -std=c99" } */
   5
   6 #define FORTIFY_SOURCE 2
   7 #include <stdio.h>
   8 #include <stdarg.h>
   9
  10 static char buf[4096];
  11 static char gfmt[] = "%Lg";
  12
  13 static int __attribute__ ((noipa))
  14 foo (char *str, const char *fmt, ...)
  15 {
  16   int ret;
  17   va_list ap;
  18   va_start (ap, fmt);
  19   ret = vsnprintf (str, 4096, fmt, ap);
  20   va_end (ap);
  21   return ret;
  22 }
  23
  24 int
  25 main ()
  26 {
  27   long double dval = 128.0L;
  28   int ret = foo (buf, gfmt, dval);
  29   if (ret != 3 || __builtin_strcmp (buf, "128") != 0)
  30     __builtin_abort ();
  31   return 0;
  32 }