Sync with gcc/libiberty.

libiberty/xvasprintf.c

@@ -0,0 +1,61 @@
+/* Implement the xvasprintf function.
+   Copyright (C) 2014 Free Software Foundation, Inc.
+   Contributed by Manuel Lopez-Ibanez.
+
+This file is part of the libiberty library.
+Libiberty is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+Libiberty 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with libiberty; see the file COPYING.LIB.  If not, write
+to the Free Software Foundation, Inc., 51 Franklin Street - Fifth
+Floor, Boston, MA 02110-1301, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <ansidecl.h>
+#include <stdarg.h>
+#if !defined (va_copy) && defined (__va_copy)
+# define va_copy(d,s)  __va_copy((d),(s))
+#endif
+#include <stdio.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#include "libiberty.h"
+#include "vprintf-support.h"
+
+/*
+
+@deftypefn Replacement char* xvasprintf (const char *@var{format}, va_list @var{args})
+
+Print to allocated string without fail.  If @code{xvasprintf} fails,
+this will print a message to @code{stderr} (using the name set by
+@code{xmalloc_set_program_name}, if any) and then call @code{xexit}.
+
+@end deftypefn
+
+*/
+
+char *
+xvasprintf (const char *format,
+#if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
+           _BSD_VA_LIST_ args)
+#else
+           va_list args)
+#endif
+{
+  char *result;
+  int total_width = libiberty_vprintf_buffer_size (format, args);
+  result = (char *) xmalloc (total_width);
+  vsprintf (result, format, args);
+  return result;
+}