From e58d0412cbde4e0f1a4490e7ce4c5d480866bfbe Mon Sep 17 00:00:00 2001
From: Andrea Mattavelli <andreamattavelli@gmail.com>
Date: Tue, 9 Aug 2016 13:50:45 +0100
Subject: Fix to PTree pointer use-after-delete undefined behavior

---
 lib/Core/PTree.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Core/PTree.cpp b/lib/Core/PTree.cpp
index f0e7ab51..77698bb5 100644
--- a/lib/Core/PTree.cpp
+++ b/lib/Core/PTree.cpp
@@ -37,7 +37,6 @@ void PTree::remove(Node *n) {
   assert(!n->left && !n->right);
   do {
     Node *p = n->parent;
-    delete n;
     if (p) {
       if (n == p->left) {
         p->left = 0;
@@ -46,6 +45,7 @@ void PTree::remove(Node *n) {
         p->right = 0;
       }
     }
+    delete n;
     n = p;
   } while (n && !n->left && !n->right);
 }
-- 
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