===================================================================
RCS file: /home/cvs/OpenXM_contrib/gc/Attic/malloc.c,v
retrieving revision 1.1.1.1
retrieving revision 1.1.1.2
diff -u -p -r1.1.1.1 -r1.1.1.2
--- OpenXM_contrib/gc/Attic/malloc.c	1999/11/27 10:58:32	1.1.1.1
+++ OpenXM_contrib/gc/Attic/malloc.c	2000/04/14 11:07:59	1.1.1.2
@@ -93,8 +93,16 @@ register ptr_t *opp;
           if(GC_incremental && !GC_dont_gc)
 		GC_collect_a_little_inner((int)n_blocks);
 	lw = ROUNDED_UP_WORDS(lb);
-	while ((h = GC_allochblk(lw, k, 0)) == 0
-		&& GC_collect_or_expand(n_blocks, FALSE));
+        h = GC_allochblk(lw, k, 0);
+#       ifdef USE_MUNMAP
+	  if (0 == h) {
+	    GC_merge_unmapped();
+	    h = GC_allochblk(lw, k, 0);
+	  }
+#	endif
+	while (0 == h && GC_collect_or_expand(n_blocks, FALSE)) {
+	  h = GC_allochblk(lw, k, 0);
+	}
 	if (h == 0) {
 	    op = 0;
 	} else {