* alloc.c: Simplify handling of large-request failures (Bug#8800).

(SPARE_MEMORY): Always define.
(LARGE_REQUEST): Remove.
(memory_full): Use SPARE_MEMORY rather than LARGE_REQUEST.

src/ChangeLog

+2011-06-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* alloc.c: Simplify handling of large-request failures (Bug#8800).
+	(SPARE_MEMORY): Always define.
+	(LARGE_REQUEST): Remove.
+	(memory_full): Use SPARE_MEMORY rather than LARGE_REQUEST.
+
 2011-06-06  Martin Rudalics  <rudalics@gmx.at>
 
 	* lisp.h: Move EXFUNS for Fframe_root_window,

src/alloc.c

@@ -190,17 +190,10 @@ static int total_free_floats, total_floats;
 
 static char *spare_memory[7];
 
-#ifndef SYSTEM_MALLOC
-/* Amount of spare memory to keep in large reserve block.  */
+/* Amount of spare memory to keep in large reserve block, or to see
+   whether this much is available when malloc fails on a larger request.  */
 
 #define SPARE_MEMORY (1 << 14)
-#endif
-
-#ifdef SYSTEM_MALLOC
-# define LARGE_REQUEST (1 << 14)
-#else
-# define LARGE_REQUEST SPARE_MEMORY
-#endif
 
 /* Number of extra blocks malloc should get when it needs more core.  */
 
@@ -3289,9 +3282,9 @@ memory_full (size_t nbytes)
 {
   /* Do not go into hysterics merely because a large request failed.  */
   int enough_free_memory = 0;
-  if (LARGE_REQUEST < nbytes)
+  if (SPARE_MEMORY < nbytes)
     {
-      void *p = malloc (LARGE_REQUEST);
+      void *p = malloc (SPARE_MEMORY);
       if (p)
 	{
 	  free (p);