1 files changed, 183 insertions, 0 deletions
diff --git a/contrib/gcc/xmalloc.c b/contrib/gcc/xmalloc.c
new file mode 100644
index 0000000..c3fe1a8
--- /dev/null
+++ b/contrib/gcc/xmalloc.c
@@ -0,0 +1,183 @@
+/* memory allocation routines with error checking.
+   Copyright 1989, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
+   
+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., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/*
+
+@deftypefn Replacement void* xmalloc (size_t)
+
+Allocate memory without fail.  If @code{malloc} 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}.  Note that it is therefore safe for
+a program to contain @code{#define malloc xmalloc} in its source.
+
+@end deftypefn
+
+@deftypefn Replacement void* xrealloc (void *@var{ptr}, size_t @var{size})
+Reallocate memory without fail.  This routine functions like @code{realloc},
+but will behave the same as @code{xmalloc} if memory cannot be found.
+
+@end deftypefn
+
+@deftypefn Replacement void* xcalloc (size_t @var{nelem}, size_t @var{elsize})
+
+Allocate memory without fail, and set it to zero.  This routine functions
+like @code{calloc}, but will behave the same as @code{xmalloc} if memory
+cannot be found.
+
+@end deftypefn
+
+@deftypefn Replacement void xmalloc_set_program_name (const char *@var{name})
+
+You can use this to set the name of the program used by
+@code{xmalloc_failed} when printing a failure message.
+
+@end deftypefn
+
+@deftypefn Replacement void xmalloc_failed (size_t)
+
+This function is not meant to be called by client code, and is listed
+here for completeness only.  If any of the allocation routines fail, this
+function will be called to print an error message and terminate execution.
+
+@end deftypefn
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "ansidecl.h"
+#include "libiberty.h"
+
+#include <stdio.h>
+
+#ifdef ANSI_PROTOTYPES
+#include <stddef.h>
+#else
+#define size_t unsigned long
+#define ptrdiff_t long
+#endif
+
+#if VMS
+#include <stdlib.h>
+#include <unixlib.h>
+#else
+/* For systems with larger pointers than ints, these must be declared.  */
+PTR malloc PARAMS ((size_t));
+PTR realloc PARAMS ((PTR, size_t));
+PTR calloc PARAMS ((size_t, size_t));
+PTR sbrk PARAMS ((ptrdiff_t));
+#endif
+
+/* The program name if set.  */
+static const char *name = "";
+
+#ifdef HAVE_SBRK
+/* The initial sbrk, set when the program name is set. Not used for win32
+   ports other than cygwin32.  */
+static char *first_break = NULL;
+#endif /* HAVE_SBRK */
+
+void
+xmalloc_set_program_name (s)
+     const char *s;
+{
+  name = s;
+#ifdef HAVE_SBRK
+  /* Win32 ports other than cygwin32 don't have brk() */
+  if (first_break == NULL)
+    first_break = (char *) sbrk (0);
+#endif /* HAVE_SBRK */
+}
+
+void
+xmalloc_failed (size)
+     size_t size;
+{
+#ifdef HAVE_SBRK
+  extern char **environ;
+  size_t allocated;
+
+  if (first_break != NULL)
+    allocated = (char *) sbrk (0) - first_break;
+  else
+    allocated = (char *) sbrk (0) - (char *) &environ;
+  fprintf (stderr,
+	   "\n%s%sout of memory allocating %lu bytes after a total of %lu bytes\n",
+	   name, *name ? ": " : "",
+	   (unsigned long) size, (unsigned long) allocated);
+#else /* HAVE_SBRK */
+  fprintf (stderr,
+	   "\n%s%sout of memory allocating %lu bytes\n",
+	   name, *name ? ": " : "",
+	   (unsigned long) size);
+#endif /* HAVE_SBRK */
+  xexit (1);
+}  
+
+PTR
+xmalloc (size)
+    size_t size;
+{
+  PTR newmem;
+
+  if (size == 0)
+    size = 1;
+  newmem = malloc (size);
+  if (!newmem)
+    xmalloc_failed (size);
+
+  return (newmem);
+}
+
+PTR
+xcalloc (nelem, elsize)
+  size_t nelem, elsize;
+{
+  PTR newmem;
+
+  if (nelem == 0 || elsize == 0)
+    nelem = elsize = 1;
+
+  newmem = calloc (nelem, elsize);
+  if (!newmem)
+    xmalloc_failed (nelem * elsize);
+
+  return (newmem);
+}
+
+PTR
+xrealloc (oldmem, size)
+    PTR oldmem;
+    size_t size;
+{
+  PTR newmem;
+
+  if (size == 0)
+    size = 1;
+  if (!oldmem)
+    newmem = malloc (size);
+  else
+    newmem = realloc (oldmem, size);
+  if (!newmem)
+    xmalloc_failed (size);
+
+  return (newmem);
+}