static char *temp_filename;
+static int temp_fd_dprintf;
+
static void
do_prepare (int argc, char *argv[])
{
unlink (temp_filename);
exit (1);
}
+
+ temp_fd_dprintf = create_temp_file ("tst-chk2.", NULL);
+ if (temp_fd_dprintf == -1)
+ {
+ printf ("cannot create temporary file: %m\n");
+ exit (1);
+ }
}
#define PREPARE do_prepare
|| n1 != 1 || n2 != 2)
FAIL ();
+ if (dprintf (temp_fd_dprintf, "%s%n%s%n", str2, &n1, str2, &n2) != 2
+ || n1 != 1 || n2 != 2)
+ FAIL ();
+
strcpy (buf2 + 2, "%n%s%n");
/* When the format string is writable and contains %n,
with -D_FORTIFY_SOURCE=2 it causes __chk_fail. */
FAIL ();
CHK_FAIL2_END
+ CHK_FAIL2_START
+ if (dprintf (temp_fd_dprintf, buf2, str2, &n1, str2, &n1) != 2)
+ FAIL ();
+ CHK_FAIL2_END
+
/* But if there is no %n, even writable format string
should work. */
buf2[6] = '\0';
snprintf (buf, buf_size, "%3$d\n", 1, 2, 3, 4);
CHK_FAIL2_END
+ CHK_FAIL2_START
+ dprintf (temp_fd_dprintf, "%3$d\n", 1, 2, 3, 4);
+ CHK_FAIL2_END
+
int sp[2];
if (socketpair (PF_UNIX, SOCK_STREAM, 0, sp))
FAIL ();