Mercurial > gnulib
view lib/perror.c @ 40086:d6de7c427079
stdopen: modernize and simplify
* lib/stdopen.c: Update copyright date
Do not include sys/types.h; no longer needed these days.
(stdopen): Use C99-style decl in loop. Return int errno
value, rather than just a bool. Do not worry about fd mismatches,
since the caller cares only if 0, 1, 2 are occupied.
* lib/stdopen.h: No need to include <stdbool.h>.
* m4/stdopen.m4: Remove.
* modules/stdopen: New file.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 05 Jan 2019 18:02:32 -0800 |
parents | b06060465f09 |
children |
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/* Print a message describing error code. Copyright (C) 2008-2019 Free Software Foundation, Inc. Written by Bruno Haible and Simon Josefsson. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ #include <config.h> /* Specification. */ #include <stdio.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include "strerror-override.h" /* Use the system functions, not the gnulib overrides in this file. */ #undef fprintf void perror (const char *string) { char stackbuf[STACKBUF_LEN]; int ret; /* Our implementation guarantees that this will be a non-empty string, even if it returns EINVAL; and stackbuf should be sized large enough to avoid ERANGE. */ ret = strerror_r (errno, stackbuf, sizeof stackbuf); if (ret == ERANGE) abort (); if (string != NULL && *string != '\0') fprintf (stderr, "%s: %s\n", string, stackbuf); else fprintf (stderr, "%s\n", stackbuf); }