# HG changeset patch
# User Thinker K.F. Li <thinker@codemud.net>
# Date 1284091480 -28800
# Node ID 3808a6ffc88195211c58e88fdd5297c54504f60f
# Parent  cf0d2482762455eea80ab900fcf600cf170a83be
Fix logical bug walk_code_tree() and duplicate function calls

diff -r cf0d24827624 -r 3808a6ffc881 src/cospy.c
--- a/src/cospy.c	Fri Sep 10 11:43:43 2010 +0800
+++ b/src/cospy.c	Fri Sep 10 12:04:40 2010 +0800
@@ -141,11 +141,10 @@
     if(expr == NULL)
 	return;
     
+    if(visit && TREE_VISITED(expr))
+	return;
     TREE_VISITED(expr) = visit;
     
-    if(TREE_VISITED(expr))
-	return;
-
     code = TREE_CODE(expr);
 
     if(cb && (accept_code == -1 || code == accept_code))
@@ -457,6 +456,9 @@
 	   EXPR_FILENAME(expr),
 	   EXPR_LINENO(expr),
 	   TREE_CODE(parent));
+
+    /* Do a function call twice */
+    tree_insert_before(expr, expr, parent);
 }
 
 /*! \brief Find all call expression in a code block.