ld crashes when map files are enabled

[Yuri Dario]

ld crashes when map file name differs from module name, because of wrong memory allocation.

Index: src/ld/ld.c
===================================================================
--- src/ld/ld.c	(revision 2508)
+++ src/ld/ld.c	(working copy)
@@ -3984,7 +3984,7 @@
 	{
 	  if (map_filename == NULL)
 	    {
-	      freeav[j++] = map_filename = ALLOCA (strlen (output_filename) + 5);
+	      freeav[j++] = map_filename = ALLOCA (strlen (exe_filename) + 5);
               strcpy (map_filename, exe_filename);
 	      _remext (map_filename);
 	      strcat (map_filename, ".map");

[bird]

Duplicate of #27.