toolchain/52265: Missing headers in distribution for GCC sanitizers

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>Number:         52265
>Category:       toolchain
>Synopsis:       Missing headers in distribution for GCC sanitizers
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 31 11:15:00 +0000 2017
>Originator:     Kamil Rytarowski
>Release:        NetBSD 7.99.75 amd64
>Organization:
TNF
>Environment:
NetBSD chieftec 7.99.75 NetBSD 7.99.75 (GENERIC) #1: Wed May 31 01:19:38 CEST 2017  root@chieftec:/public/netbsd-root/sys/arch/amd64/compile/GENERIC amd64
>Description:
GCC 5.x is built with support for sanitizers (asan, tsan, ubsan), however the distribution does not contain sanitizer headers, e.g.:

<sanitizer/asan_interface.h>
>How-To-Repeat:
Install NetBSD 7.99.75 and try to find sanitize/ headers in /usr/include.
>Fix:
N/A