gdb/posix-hdep.c

   1 /* Host support routines for MinGW, for GDB, the GNU debugger.
   2
   3    Copyright (C) 2006
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21    Boston, MA 02110-1301, USA.  */
  22
  23 #include "defs.h"
  24
  25 #include "gdb_string.h"
  26
  27 /* The strerror() function can return NULL for errno values that are
  28    out of range.  Provide a "safe" version that always returns a
  29    printable string. */
  30
  31 char *
  32 safe_strerror (int errnum)
  33 {
  34   char *msg;
  35
  36   msg = strerror (errnum);
  37   if (msg == NULL)
  38     {
  39       static char buf[32];
  40       xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
  41       msg = buf;
  42     }
  43   return (msg);
  44 }
  45