From: Guido van Rossum <guido@python.org>
Date: Sun, 18 Nov 1990 17:38:42 +0000 (+0000)
Subject: Free parse tree when deleting parser.
X-Git-Tag: v0.9.8~1104
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=99f02d43f3d8d771b9e1b4784a72937bffff5647;p=thirdparty%2FPython%2Fcpython.git

Free parse tree when deleting parser.
---

diff --git a/Parser/parser.c b/Parser/parser.c
index e0b3530f511b..294c534d0ff4 100644
--- a/Parser/parser.c
+++ b/Parser/parser.c
@@ -96,8 +96,6 @@ newparser(g, start)
 	ps->p_grammar = g;
 	ps->p_tree = newnode(start);
 	if (ps->p_tree == NULL) {
-		if (ps->p_tree != NULL)
-			DEL(ps->p_tree); /* XXX freeing a node!?! */
 		DEL(ps);
 		return NULL;
 	}
@@ -110,6 +108,9 @@ void
 delparser(ps)
 	parser_state *ps;
 {
+	/* NB If you want to save the parse tree,
+	   you must set p_tree to NULL before calling delparser! */
+	freenode(ps->p_tree);
 	DEL(ps);
 }