root/maint/gnulib/lib/strerror-override.h

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   1 /* strerror-override.h --- POSIX compatible system error routine
   2 
   3    Copyright (C) 2010-2021 Free Software Foundation, Inc.
   4 
   5    This file is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9 
  10    This file 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 Lesser General Public License for more details.
  14 
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17 
  18 #ifndef _GL_STRERROR_OVERRIDE_H
  19 # define _GL_STRERROR_OVERRIDE_H
  20 
  21 # include <errno.h>
  22 # include <stddef.h>
  23 
  24 /* Reasonable buffer size that should never trigger ERANGE; if this
  25    proves too small, we intentionally abort(), to remind us to fix
  26    this value.  */
  27 # define STACKBUF_LEN 256
  28 
  29 /* If ERRNUM maps to an errno value defined by gnulib, return a string
  30    describing the error.  Otherwise return NULL.  */
  31 # if REPLACE_STRERROR_0 \
  32      || GNULIB_defined_ESOCK \
  33      || GNULIB_defined_ESTREAMS \
  34      || GNULIB_defined_EWINSOCK \
  35      || GNULIB_defined_ENOMSG \
  36      || GNULIB_defined_EIDRM \
  37      || GNULIB_defined_ENOLINK \
  38      || GNULIB_defined_EPROTO \
  39      || GNULIB_defined_EMULTIHOP \
  40      || GNULIB_defined_EBADMSG \
  41      || GNULIB_defined_EOVERFLOW \
  42      || GNULIB_defined_ENOTSUP \
  43      || GNULIB_defined_ENETRESET \
  44      || GNULIB_defined_ECONNABORTED \
  45      || GNULIB_defined_ESTALE \
  46      || GNULIB_defined_EDQUOT \
  47      || GNULIB_defined_ECANCELED \
  48      || GNULIB_defined_EOWNERDEAD \
  49      || GNULIB_defined_ENOTRECOVERABLE \
  50      || GNULIB_defined_EILSEQ
  51 extern const char *strerror_override (int errnum) _GL_ATTRIBUTE_CONST;
  52 # else
  53 #  define strerror_override(ignored) NULL
  54 #  define GNULIB_defined_strerror_override_macro 1
  55 # endif
  56 
  57 #endif /* _GL_STRERROR_OVERRIDE_H */

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