The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/portage-stable/+/af2a1bb80f1d1d7c142b40aac2eaa4c879663c02

commit af2a1bb80f1d1d7c142b40aac2eaa4c879663c02
Author: Jonathan Brandmeyer <jbrandmeyer@google.com>
Date: Wed May 30 19:50:41 2018

gmp: upgraded package to upstream

Upgraded dev-libs/gmp to version 6.1.2 on all.

BUG= chromium:843742 
TEST=libgmp package tests and openssl package tests on AMD64.  libgmp unit tests under qemu-arm.

Change-Id: I79b18f9a1a17c5b0e41e477d6b16273e6e9fee3a
Reviewed-on: https://chromium-review.googlesource.com/1062720
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Jonathan Brandmeyer <jbrandmeyer@chromium.org>
Reviewed-by: Benjamin Gordon <bmgordon@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>

[modify] https://crrev.com/af2a1bb80f1d1d7c142b40aac2eaa4c879663c02/dev-libs/gmp/Manifest
[rename] https://crrev.com/af2a1bb80f1d1d7c142b40aac2eaa4c879663c02/dev-libs/gmp/gmp-6.1.2.ebuild
[add] https://crrev.com/af2a1bb80f1d1d7c142b40aac2eaa4c879663c02/dev-libs/gmp/files/gmp-6.1.0-noexecstack-detect.patch
[rename] https://crrev.com/af2a1bb80f1d1d7c142b40aac2eaa4c879663c02/metadata/md5-cache/dev-libs/gmp-6.1.2