1#include <error.h>
2#include <mcheck.h>
3#include <stdio.h>
4#include <string.h>
5#include <wchar.h>
6#include <libc-diag.h>
7
8#include <support/xstdio.h>
9
10static int
11do_test (int argc, char *argv[])
12{
13 mtrace ();
14 xfreopen (path: argc == 1 ? "/dev/stdout" : argv[1], mode: "a", stderr);
15 /* Orient the stream. */
16 fwprintf (stderr, format: L"hello world\n");
17 char buf[20000];
18 static const char str[] = "hello world! ";
19 for (int i = 0; i < 1000; ++i)
20 memcpy (&buf[i * (sizeof (str) - 1)], str, sizeof (str));
21 error (status: 0, errnum: 0, format: str);
22
23 /* We're testing a large format string here and need to generate it
24 to avoid this source file being ridiculous. So disable the warning
25 about a generated format string. */
26 DIAG_PUSH_NEEDS_COMMENT;
27 DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat-security");
28
29 error (status: 0, errnum: 0, format: buf);
30 error (status: 0, errnum: 0, format: buf);
31
32 DIAG_POP_NEEDS_COMMENT;
33
34 error (status: 0, errnum: 0, format: str);
35 return 0;
36}
37
38#define TEST_FUNCTION do_test (argc, argv)
39#include "../test-skeleton.c"
40

source code of glibc/misc/tst-error1.c