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Author SHA1 Message Date
Keith Randall bc98e35b53 cmd/compile: avoid memmove -> SSA move rewrite when size is negative
We should panic in this situation. Rewriting to a SSA op just leads
to a compiler panic.

Fixes #36259

Change-Id: I6e0bccbed7dd0fdac7ebae76b98a211947947386
Reviewed-on: https://go-review.googlesource.com/c/go/+/212405
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2020-02-24 20:23:14 +00:00