diff --git a/Build.sh b/Build.sh
index 24c39d3..8949797 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.613 2013/01/12 02:25:01 tg Exp $'
+srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.614 2013/02/10 18:17:28 tg Exp $'
 #-
 # Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 #		2011, 2012
@@ -1529,7 +1529,7 @@ else
 		#define EXTERN
 		#define MKSH_INCLUDES_ONLY
 		#include "sh.h"
-		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.613 2013/01/12 02:25:01 tg Exp $");
+		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.614 2013/02/10 18:17:28 tg Exp $");
 		int main(void) { printf("Hello, World!\n"); return (0); }
 EOF
 	case $cm in
@@ -2380,6 +2380,8 @@ HAVE_STRING_H			ac_header
 HAVE_CAN_FSTACKPROTECTORALL	ac_flags
 
 ==== cpp definitions ====
+DEBUG				enable debugging (want gcc), implies:
+DEBUG_LEAKS			enable freeing resources before exiting
 MKSHRC_PATH			"~/.mkshrc" (do not change)
 MKSH_A4PB			force use of arc4random_pushb
 MKSH_ASSUME_UTF8		(0=disabled, 1=enabled; default: unset)
diff --git a/main.c b/main.c
index 6e5e633..4f99edd 100644
--- a/main.c
+++ b/main.c
@@ -34,7 +34,7 @@
 #include <locale.h>
 #endif
 
-__RCSID("$MirOS: src/bin/mksh/main.c,v 1.256 2013/02/10 17:55:57 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/main.c,v 1.257 2013/02/10 18:17:30 tg Exp $");
 
 extern char **environ;
 
@@ -971,6 +971,8 @@ quitenv(struct shf *shf)
 	 * Either main shell is exiting or cleanup_parents_env() was called.
 	 */
 	if (ep->oenv == NULL) {
+		struct block *l;
+
 		if (ep->type == E_NONE) {
 			/* Main shell exiting? */
 #if HAVE_PERSISTENT_HISTORY
@@ -997,6 +999,13 @@ quitenv(struct shf *shf)
 		}
 		if (shf)
 			shf_close(shf);
+#ifdef DEBUG_LEAKS
+		l = e->loc;
+		while (l) {
+			afreeall(&l->area);
+			l = l->next;
+		}
+#endif
 		reclaim();
 #ifdef DEBUG_LEAKS
 #ifndef MKSH_NO_CMDLINE_EDITING