From ba80b6e828f074c55cd28e917b871f63f4be1b47 Mon Sep 17 00:00:00 2001
From: Basile Burg <basile.b@gmx.com>
Date: Sun, 1 Jul 2018 15:47:05 +0200
Subject: [PATCH] d2syn, prevent possible unsafe access to curr range

(maybe #339)
---
 src/ce_d2syn.pas | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ce_d2syn.pas b/src/ce_d2syn.pas
index caa0c6f4..d86a0f7b 100644
--- a/src/ce_d2syn.pas
+++ b/src/ce_d2syn.pas
@@ -974,6 +974,8 @@ var
 begin
   inherited SetRange(value);
   stored := TSynD2SynRange(CodeFoldRange.RangeType);
+  if not assigned(fCurrRange) or not Assigned(stored) then
+    exit;
   fCurrRange.copyFrom(stored);
 end;
 
@@ -982,7 +984,8 @@ var
   stored: TSynD2SynRange;
 begin
   stored := TSynD2SynRange(inherited GetRange);
-  if (stored = nil) then stored := TSynD2SynRange.Create(nil);
+  if (stored = nil) then
+    stored := TSynD2SynRange.Create(nil);
   stored.copyFrom(fCurrRange);
   //
   CodeFoldRange.RangeType := Pointer(stored);