1/* Test for case handling in regex.
2 Copyright (C) 2001-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <sys/types.h>
20#include <regex.h>
21#include <stdio.h>
22#include <stdlib.h>
23
24
25int
26main (void)
27{
28 regex_t re;
29 int n;
30
31 n = regcomp (preg: &re, pattern: "[a-bA-B]", REG_ICASE);
32 if (n != 0)
33 {
34 char buf[500];
35 regerror (errcode: n, preg: &re, errbuf: buf, errbuf_size: sizeof (buf));
36 printf (format: "regcomp failed: %s\n", buf);
37 exit (1);
38 }
39
40 regfree (preg: &re);
41
42 return 0;
43}
44

source code of glibc/posix/bug-regex3.c