toolchain/53355: MKREPRO fallout with MKDEBUG

[martin%NetBSD.org@localhost]

>Number:         53355
>Category:       toolchain
>Synopsis:       MKREPRO fallout with MKDEBUG
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 10 10:40:00 +0000 2018
>Originator:     Martin Husemann
>Release:        NetBSD 8.99.19
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD seven-days-to-the-wolves.aprisoft.de 8.99.19 NetBSD 8.99.19 (GENERIC) #228: Mon Jun 4 09:01:34 CEST 2018 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:

Trying to reproduce a releng auto cluster build of netbsd-8
locally fails to create the same results. There are binary
difference in the debug sections. Two random examples:

--- local/usr/lib/libexpat.so.2.3
+++ releng/usr/lib/libexpat.so.2.3
readelf --wide --decompress --hex-dump=.gnu_debuglink {}
@@ -1,5 +1,5 @@
  
Hex dump of section '.gnu_debuglink':
   0x00000000 6c696265 78706174 2e736f2e 322e332e libexpat.so.2.3.
-  0x00000010 64656275 67000000 17bc9869          debug......i
+  0x00000010 64656275 67000000 66cddb6a          debug...f..j
--- local/bin/pwd
+++ releng/bin/pwd
 readelf --wide --decompress --hex-dump=.gnu_debuglink {}
@@ -1,4 +1,4 @@
  
 Hex dump of section '.gnu_debuglink':
-  0x00000000 7077642e 64656275 67000000 dee95ad5 pwd.debug.....Z.
+  0x00000000 7077642e 64656275 67000000 bb5469dd pwd.debug....Ti.


All differences I looked at are exactly like this, and always only a single
line of differences early at the start of the hexdump.

>How-To-Repeat:

s/a

>Fix:
n/a