gsasl  1.10.0
About: GNU SASL is an implementation of the Simple Authentication and Security Layer (SASL). Development version.
  Fossies Dox: gsasl-1.10.0.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

perror.c
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1 /* Print a message describing error code.
2  Copyright (C) 2008-2021 Free Software Foundation, Inc.
3  Written by Bruno Haible and Simon Josefsson.
4 
5  This program is free software: you can redistribute it and/or modify
6  it under the terms of the GNU General Public License as published by
7  the Free Software Foundation; either version 3 of the License, or
8  (at your option) any later version.
9 
10  This program 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
13  GNU General Public License for more details.
14 
15  You should have received a copy of the GNU General Public License
16  along with this program. If not, see <https://www.gnu.org/licenses/>. */
17 
18 #include <config.h>
19 
20 /* Specification. */
21 #include <stdio.h>
22 
23 #include <errno.h>
24 #include <stdlib.h>
25 #include <string.h>
26 
27 #include "strerror-override.h"
28 
29 /* Use the system functions, not the gnulib overrides in this file. */
30 #undef fprintf
31 
32 void
33 perror (const char *string)
34 {
35  char stackbuf[STACKBUF_LEN];
36  int ret;
37 
38  /* Our implementation guarantees that this will be a non-empty
39  string, even if it returns EINVAL; and stackbuf should be sized
40  large enough to avoid ERANGE. */
41  ret = strerror_r (errno, stackbuf, sizeof stackbuf);
42  if (ret == ERANGE)
43  abort ();
44 
45  if (string != NULL && *string != '\0')
46  fprintf (stderr, "%s: %s\n", string, stackbuf);
47  else
48  fprintf (stderr, "%s\n", stackbuf);
49 }
this configure time declaration test was not run int strerror_r(int errnum, char *buf, size_t buflen)
Definition: strerror_r.c:144
#define NULL
Definition: stddef.in.h:72
#define STACKBUF_LEN
void perror(const char *string)
Definition: perror.c:33