configure.in: Check for calloc.

        * configure.in: Check for calloc.
        * calloc.c: New file.
        * xmalloc.c (xcalloc): New function.

From-SVN: r23642

libiberty/ChangeLog

+Fri Nov 13 19:18:05 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* configure.in: Check for calloc.
+
+	* calloc.c: New	file.
+
+	* xmalloc.c (xcalloc): New function.
+
 Fri Nov 13 08:51:46 EST 1998  Andrew MacLeod  <amacleod@cygnus.com>
 
 	*cplus-dem.c (demangle_prefix): Use the last "__"

libiberty/calloc.c

+#include "ansidecl.h"
+#include "libiberty.h"
+ 
+#ifdef ANSI_PROTOTYPES
+#include <stddef.h>
+#else
+#define size_t unsigned long
+#endif
+
+/* For systems with larger pointers than ints, this must be declared.  */
+PTR malloc PARAMS ((size_t));
+
+PTR
+calloc (nelem, elsize)
+  size_t nelem, elsize;
+{
+  register PTR ptr;  
+
+  if (nelem == 0 || elsize == 0)
+    nelem = elsize = 1;
+  
+  ptr = malloc (nelem * elsize);
+  if (ptr) bzero (ptr, nelem * elsize);
+  
+  return ptr;
+}

libiberty/configure.in

@@ -117,6 +117,7 @@ funcs="$funcs basename"
 funcs="$funcs bcmp"
 funcs="$funcs bcopy"
 funcs="$funcs bzero"
+funcs="$funcs calloc"
 funcs="$funcs clock"
 funcs="$funcs getcwd"
 funcs="$funcs getpagesize"
@@ -156,7 +157,7 @@ checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times"
 # These are neither executed nor required, but they help keep
 # autoheader happy without adding a bunch of text to acconfig.h.
 if test "x" = "y"; then
-  AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero clock getcwd)
+  AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero calloc clock getcwd)
   AC_CHECK_FUNCS(getpagesize index insque memchr memcmp memcpy memmove)
   AC_CHECK_FUNCS(memset random rename rindex sigsetmask strcasecmp)
   AC_CHECK_FUNCS(strchr strdup strncasecmp strrchr strstr strtod strtol)

libiberty/xmalloc.c

@@ -36,6 +36,7 @@ Boston, MA 02111-1307, USA.  */
 /* 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
 
@@ -95,6 +96,41 @@ xmalloc (size)
 }
 
 PTR
+xcalloc (nelem, elsize)
+  size_t nelem, elsize;
+{
+  PTR newmem;
+
+  if (nelem == 0 || elsize == 0)
+    nelem = elsize = 1;
+
+  newmem = calloc (nelem, elsize);
+  if (!newmem)
+    {
+#if ! defined (_WIN32) || defined (__CYGWIN32__)
+      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%sCan not allocate %lu bytes after allocating %lu bytes\n",
+	       name, *name ? ": " : "",
+	       (unsigned long) (nelem * elsize), (unsigned long) allocated);
+#else
+      fprintf (stderr,
+              "\n%s%sCan not allocate %lu bytes\n",
+              name, *name ? ": " : "",
+              (unsigned long) (nelem * elsize));
+#endif /* ! _WIN32 || __CYGWIN32 __ */
+      xexit (1);
+    }
+  return (newmem);
+}
+
+PTR
 xrealloc (oldmem, size)
     PTR oldmem;
     size_t size;