port-sparc/52475: libexec/ld.elf_so test regressions on sparc

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         52475
>Category:       port-sparc
>Synopsis:       libexec/ld.elf_so test regressions on sparc
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 08 08:15:00 +0000 2017
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date >= 2017.07.19.13.10.28
>Organization:

>Environment:
System: NetBSD
Architecture: sparc
Machine: sparc
>Description:

The test cases

  libexec/ld.elf_so/t_dlerror-false:rtld_dlerror_false
  libexec/ld.elf_so/t_dlinfo:rtld_dlinfo_linkmap_dlopen

have been consistently failing on sparc since commits

  2017.07.19.13.10.28 joerg src/external/gpl3/gcc/dist/gcc/config/m68k/netbsd-elf.h 1.11
  2017.07.19.13.10.28 joerg src/external/gpl3/gcc/dist/gcc/config/netbsd-elf.h 1.12

Logs at

  http://releng.netbsd.org/b5reports/sparc/commits-2017.07.html#2017.07.19.13.10.28
  http://www.gson.org/netbsd/bugs/build/sparc/commits-2017.07.html#2017.07.19.13.10.28

contain the error message

  /lib/libgcc_s.so.1: Undefined PLT symbol "__deregister_frame_info" (symnum = 52)

>How-To-Repeat:

Run the ATF tests on sparc.

>Fix: