Worldserver.exe!Map::Update(unsigned int t_diff) Line 788Ĝ++ Worldserver.exe!Player::Update(unsigned int p_time) Line 1059Ĝ++ Worldserver.exe!Unit::Update(unsigned int p_time) Line 447Ĝ++ Worldserver.exe!EventProcessor::Update(unsigned int p_time) Line 56Ĝ++ Worldserver.exe!SpellEvent::Execute(unsigned _int64 e_time, unsigned int p_time) Line 7075Ĝ++ Worldserver.exe!Spell::update(unsigned int difftime) Line 3591Ĝ++ Worldserver.exe!Spell::cast(bool skipCheck) Line 3108Ĝ++ > worldserver.exe!Spell::_cast(bool skipCheck) Line 3164Ĝ++ Here is a call stack (most recent call first) In Spell::prepare items are supposed to be already checked, but checking the items (Spell::prepare) and taking them from the player (Spell::_cast) are separated by a timed event, which means that the items could no longer be available when they are removed. This is some kind of attempt at optimization to avoid checking reagents twice for instant spells. The reagents are not checked before removing them since the spell is instant cast and cast(!m_casttime) causes skipCheck to be true in Spell::_cast. Not sure how to properly fix this issue though as removing the flag is probably not the right way. Removing the flag from the spell will make the core check the items and avoid the exploit. This causes Spell::CheckItems to return before checking anything meaningful, so the reagents are not checked at all! This means that players could hack and send packets to do the transform too at any time without trying to 'glitch it'. The spell the item casts to transform to another item has SPELL_ATTR2_IGNORE_ITEM_CHECK flag in DBC in AttributesEx2.

Wow item dupe hack 3.3.5