Core/Auras: prevent stack overflow while processing SPELL_EFFECT_ADD_EXTRA_ATTACKS

(cherry picked from commit b93ee312fac22bf4828dc1afece644e3bd93cb84)

1 files changed, 10 insertions, 0 deletions

diff --git a/src/server/game/Spells/Auras/SpellAuraEffects.cpp b/src/server/game/Spells/Auras/SpellAuraEffects.cpp
index 0c12b28a5af..19bc046ce87 100644
--- a/src/server/game/Spells/Auras/SpellAuraEffects.cpp
+++ b/src/server/game/Spells/Auras/SpellAuraEffects.cpp
@@ -1224,6 +1224,16 @@ bool AuraEffect::CheckEffectProc(AuraApplication* aurApp, ProcEventInfo& eventIn
             if (!spellInfo || !(spellInfo->GetSchoolMask() & GetMiscValue()))
                 result = false;
             break;
+        case SPELL_AURA_PROC_TRIGGER_SPELL:
+        case SPELL_AURA_PROC_TRIGGER_SPELL_WITH_VALUE:
+        {
+            // Don't proc extra attacks while already processing extra attack spell
+            uint32 triggerSpellId = GetSpellInfo()->Effects[GetEffIndex()].TriggerSpell;
+            if (SpellInfo const* triggeredSpellInfo = sSpellMgr->GetSpellInfo(triggerSpellId))
+                if (aurApp->GetTarget()->m_extraAttacks && triggeredSpellInfo->HasEffect(SPELL_EFFECT_ADD_EXTRA_ATTACKS))
+                    result = false;
+            break;
+        }
         default:
             break;
     }