# HG changeset patch
# User John W. Eaton <jwe@octave.org>
# Date 1381496754 14400
# Node ID 1e8f8900a041277201a9d45901042e5d17c78241
# Parent  99ffa521ecec47c07f9d2f091c19c9ba797ceea5
clean up partially constructed parse tree objects on parse errors (bug #40231)

* oct-parse.in.yy (%destructor): New declaration of cleanup actions to
take for items on the parser stack when a parse error occurs.

diff -r 99ffa521ecec -r 1e8f8900a041 libinterp/parse-tree/oct-parse.in.yy
--- a/libinterp/parse-tree/oct-parse.in.yy	Fri Oct 11 14:12:37 2013 +0200
+++ b/libinterp/parse-tree/oct-parse.in.yy	Fri Oct 11 09:05:54 2013 -0400
@@ -298,6 +298,13 @@
 %right PLUS_PLUS MINUS_MINUS
 %left '(' '.' '{'
 
+// How to clean up if there is a parse error.  We handle deleting tokens
+// and comments seperately and separators are just characters.  The
+// remaining items are dynamically allocated parse tree objects that
+// must be deleted.
+%destructor { } <sep_type> <tok_val> <comment_type> <dummy_type> <>
+%destructor { delete $$; } <*>
+
 // Where to start.
 %start input