tree dbb1726bf3d555eac116df7abef7d60cf59b29ee
parent 46a669c4ca5b80fd6f6a0a42095804d9f704611d
author Matthieu Sarter <matthieu.sarter.external@atos.net> 1493220562 +0200
committer Ian Lance Taylor <iant@golang.org> 1493254127 +0000

runtime: fix context clobbering on AIX

On AIX 64-bits, r13 is a pointer to thread data.
setcontext() overwrites r13 with the value saved by getcontext().
So, when a goroutine is scheduled on a new thread, r13 will point
to the old thread data after calling setcontext().

Code courtesy of Damien Bergamini.

Issue golang/go#19200

Change-Id: I579f002834b467cfbac888feea4951452881fb08
Reviewed-on: https://go-review.googlesource.com/41854
Reviewed-by: Ian Lance Taylor <iant@golang.org>