From: Russ Cox <rsc@golang.org>
Date: Fri, 13 Aug 2010 06:26:54 +0000 (-0700)
Subject: runtime: fix another stack split bug
X-Git-Tag: weekly.2010-08-25~62
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=e2bde5cf9b1b4e56f1d2c8469006fb11f8a99739;p=gostls13.git

runtime: fix another stack split bug

Makes godoc --http=:1234 not crash on linux/amd64.

R=r
CC=golang-dev
https://golang.org/cl/1975044
---

diff --git a/src/pkg/runtime/proc.c b/src/pkg/runtime/proc.c
index 2abb28307e..3dbc48fd9b 100644
--- a/src/pkg/runtime/proc.c
+++ b/src/pkg/runtime/proc.c
@@ -547,6 +547,9 @@ gosched(void)
 // Record that it's not using the cpu anymore.
 // This is called only from the go syscall library and cgocall,
 // not from the low-level system calls used by the runtime.
+// Entersyscall cannot split the stack: the gosave must
+// make g->sched refer to the caller's stack pointer.
+#pragma textflag 7
 void
 ·entersyscall(void)
 {