From 192814985d28c2f63c13861aa918e394f2ee9f6e Mon Sep 17 00:00:00 2001
From: Leonard Wang <wangdeyu0907@gmail.com>
Date: Sun, 24 Apr 2022 15:01:22 +0800
Subject: [PATCH] runtime/trace: record HeapGoal when StartTrace

Fixes #52517

Change-Id: I06aa6112f14f264360c3bb0ffd4e1cd54ad22514
Reviewed-on: https://go-review.googlesource.com/c/go/+/401777
Reviewed-by: hopehook <hopehook@golangcn.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
---
 src/runtime/trace.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/runtime/trace.go b/src/runtime/trace.go
index 174875264c..14364ea5a7 100644
--- a/src/runtime/trace.go
+++ b/src/runtime/trace.go
@@ -318,6 +318,9 @@ func StartTrace() error {
 
 	unlock(&sched.sysmonlock)
 
+	// Record the current state of HeapGoal to avoid information loss in trace.
+	traceHeapGoal()
+
 	startTheWorldGC()
 	return nil
 }
-- 
2.50.0