tree 8658976f7b31a42937edb7634a8a7b71f30df433
parent bfac8623d554043c710a2a6b8fe971167d7700c0
author Russ Cox <rsc@golang.org> 1438231602 -0400
committer Russ Cox <rsc@golang.org> 1438233716 +0000

cmd/compile: fix uninitialized memory during type switch assertE2I2

Fixes arm64 builder crash.

The bug is possible on all architectures; you just have to get lucky
and hit a preemption or a stack growth on entry to assertE2I2.
The test stacks the deck.

Change-Id: I8419da909b06249b1ad15830cbb64e386b6aa5f6
Reviewed-on: https://go-review.googlesource.com/12890
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>