(oatoi): declare arg to be const

[gnulib.git] / lib / xmalloc.c

diff --git a/lib/xmalloc.c b/lib/xmalloc.c
index 3d417f9..204469f 100644 (file)
--- a/lib/xmalloc.c
+++ b/lib/xmalloc.c
@@ -48,12 +48,18 @@ void free ();
 
 /* Prototypes for functions defined here.  */
 #if defined (__STDC__) && __STDC__
-static void *fixup_null_alloc (size_t n);
 void *xmalloc (size_t n);
 void *xcalloc (size_t n, size_t s);
 void *xrealloc (void *p, size_t n);
 #endif
 
+#ifndef HAVE_DONE_WORKING_MALLOC_CHECK
+you must run the autoconf test for a properly working malloc -- see malloc.m4
+#endif
+
+#ifndef HAVE_DONE_WORKING_REALLOC_CHECK
+you must run the autoconf test for a properly working realloc -- see realloc.m4
+#endif
 
 /* Exit value when the requested amount of memory is not available.
    The caller may set it to some other value.  */
@@ -71,22 +77,12 @@ void error (int, int, const char *, ...);
 void error ();
 #endif
 
-static void *
-fixup_null_alloc (n)
-     size_t n;
+static void
+xalloc_fail ()
 {
-  void *p;
-
-  p = 0;
-  if (n == 0)
-    p = malloc ((size_t) 1);
-  if (p == 0)
-    {
-      if (xalloc_fail_func)
-       (*xalloc_fail_func) ();
-      error (xalloc_exit_failure, 0, xalloc_msg_memory_exhausted);
-    }
-  return p;
+  if (xalloc_fail_func)
+    (*xalloc_fail_func) ();
+  error (xalloc_exit_failure, 0, xalloc_msg_memory_exhausted);
 }
 
 /* Allocate N bytes of memory dynamically, with error checking.  */
@@ -99,21 +95,7 @@ xmalloc (n)
 
   p = malloc (n);
   if (p == 0)
-    p = fixup_null_alloc (n);
-  return p;
-}
-
-/* Allocate memory for N elements of S bytes, with error checking.  */
-
-void *
-xcalloc (n, s)
-     size_t n, s;
-{
-  void *p;
-
-  p = calloc (n, s);
-  if (p == 0)
-    p = fixup_null_alloc (n);
+    xalloc_fail ();
   return p;
 }
 
@@ -126,10 +108,26 @@ xrealloc (p, n)
      void *p;
      size_t n;
 {
-  if (p == 0)
-    return xmalloc (n);
   p = realloc (p, n);
   if (p == 0)
-    p = fixup_null_alloc (n);
+    xalloc_fail ();
+  return p;
+}
+
+#ifdef NOT_USED
+
+/* Allocate memory for N elements of S bytes, with error checking.  */
+
+void *
+xcalloc (n, s)
+     size_t n, s;
+{
+  void *p;
+
+  p = calloc (n, s);
+  if (p == 0)
+    xalloc_fail ();
   return p;
 }
+
+#endif /* NOT_USED */