From 99923e9f54becdcb4a9a325f98c0ad004fbe4e4a Mon Sep 17 00:00:00 2001
From: GarmashAlex <garmasholeksii@gmail.com>
Date: Wed, 29 Oct 2025 13:25:47 +0300
Subject: [PATCH] native/mux: forward OnFaultV2 to child tracers with fallback

---
 eth/tracers/native/mux.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/eth/tracers/native/mux.go b/eth/tracers/native/mux.go
index 77ab254568..6f924aec61 100644
--- a/eth/tracers/native/mux.go
+++ b/eth/tracers/native/mux.go
@@ -64,6 +64,7 @@ func newMuxTracer(ctx *tracers.Context, cfg json.RawMessage, chainConfig *params
 			OnExit:          t.OnExit,
 			OnOpcode:        t.OnOpcode,
 			OnFault:         t.OnFault,
+			OnFaultV2:       t.OnFaultV2,
 			OnGasChange:     t.OnGasChange,
 			OnBalanceChange: t.OnBalanceChange,
 			OnNonceChange:   t.OnNonceChange,
@@ -92,6 +93,16 @@ func (t *muxTracer) OnFault(pc uint64, op byte, gas, cost uint64, scope tracing.
 	}
 }
 
+func (t *muxTracer) OnFaultV2(pc uint64, op byte, gas, cost uint64, scope tracing.OpContext, rData []byte, depth int, err error) {
+	for _, t := range t.tracers {
+		if t.OnFaultV2 != nil {
+			t.OnFaultV2(pc, op, gas, cost, scope, rData, depth, err)
+		} else if t.OnFault != nil {
+			t.OnFault(pc, op, gas, cost, scope, depth, err)
+		}
+	}
+}
+
 func (t *muxTracer) OnGasChange(old, new uint64, reason tracing.GasChangeReason) {
 	for _, t := range t.tracers {
 		if t.OnGasChange != nil {