From a2dfe66038baef1efcf4938fc9028ea836d97141 Mon Sep 17 00:00:00 2001
From: sasan-golchin <ahmad.golchin@mail.polimi.it>
Date: Thu, 20 Oct 2016 16:37:10 +0200
Subject: [PATCH] Bug fixed in IntrusiveList: Deleting an already removed item
is banned now to avoid undefined behaviour
---
miosix/kernel/intrusive.h | 3 +++
1 file changed, 3 insertions(+)
mode change 100644 => 100755 miosix/kernel/intrusive.h
diff --git a/miosix/kernel/intrusive.h b/miosix/kernel/intrusive.h
old mode 100644
new mode 100755
index 1031d57f..b8c46dfc
--- a/miosix/kernel/intrusive.h
+++ b/miosix/kernel/intrusive.h
@@ -791,6 +791,9 @@ public:
*/
iterator erase(iterator it)
{
+ // Can't erase an item that is already erased
+ if ((*it)->next==nullptr || (*it)->prev==nullptr) return it;
+ // Can't erase the emptyListItem which is used for internal purposes
if((*it)==&emptyListItem) return it;
iterator result = it;
result++;
--
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