[Docker-maint] Bug#823014: golang: Package compiled stdlib for PIE build mode

[Peter Colberg]

Package: golang
Version: 2:1.6.1-2
Severity: normal
Tags: patch

Dear Maintainer,

Please consider adding the following patch, which builds an optional
package containing the compiled standard library for PIE build mode.

This is a prerequisite for building position-independent executables
for the purpose of hardening Go binaries against memory corruption
vulnerabilities [1].

[1] https://bugs.debian.org/821454

A package maintainer who wishes to ship hardened binaries shall add
a Build-Depends: golang-std-pie, and a debian/rules stanza such as

override_dh_auto_build:
	dh_auto_build -O--buildsystem=golang -- -buildmode=pie -ldflags -extldflags=-Wl,-z,now,-z,relro

In the future dh-golang could be extended to pass the above flags.

Regards,
Peter
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