From 10c5cf68d40e2b26336e4b4e59d4c2f3fc3f03b9 Mon Sep 17 00:00:00 2001
From: yazdan <m.hossein95th@gmail.com>
Date: Wed, 16 Jul 2025 11:42:54 +0330
Subject: [PATCH] net/http: add proper panic message

Change-Id: Ibfb330eaf24e004ddec60a5ca08cdc780235ad8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/688315
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Mark Freeman <mark@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
---
 src/net/http/server.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/net/http/server.go b/src/net/http/server.go
index 1ca5a227ef..cf0bd0a91d 100644
--- a/src/net/http/server.go
+++ b/src/net/http/server.go
@@ -1614,7 +1614,7 @@ func writeStatusLine(bw *bufio.Writer, is11 bool, code int, scratch []byte) {
 // It's illegal to call this before the header has been flushed.
 func (w *response) bodyAllowed() bool {
 	if !w.wroteHeader {
-		panic("")
+		panic("net/http: bodyAllowed called before the header was written")
 	}
 	return bodyAllowedForStatus(w.status)
 }
-- 
2.51.0