From 213c3905e9eb4fcc4847d3f7e55ce6a0d3087318 Mon Sep 17 00:00:00 2001
From: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Date: Thu, 21 Jan 2021 02:35:03 +0700
Subject: [PATCH] [dev.regabi] cmd/compile: use node walked flag to prevent
 double walk for walkSelect

Same as CL 283733, but for walkSelect.

Passes toolstash -cmp.

Change-Id: I3ecb8d6eafd395379191c15fc58c95f75809fec9
Reviewed-on: https://go-review.googlesource.com/c/go/+/284895
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
---
 src/cmd/compile/internal/walk/select.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/cmd/compile/internal/walk/select.go b/src/cmd/compile/internal/walk/select.go
index 56ba0fa758..c6069d0ba2 100644
--- a/src/cmd/compile/internal/walk/select.go
+++ b/src/cmd/compile/internal/walk/select.go
@@ -13,9 +13,10 @@ import (
 
 func walkSelect(sel *ir.SelectStmt) {
 	lno := ir.SetPos(sel)
-	if len(sel.Compiled) != 0 {
+	if sel.Walked() {
 		base.Fatalf("double walkSelect")
 	}
+	sel.SetWalked(true)
 
 	init := ir.TakeInit(sel)
 
-- 
2.50.0