port-i386/56280: Many asan tests are failing on i386

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

>Number:         56280
>Category:       port-i386
>Synopsis:       Many asan tests are failing on i386
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 27 18:35:00 +0000 2021
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date >= 2020.09.12.12.11.19
>Organization:
  
>Environment:
System: NetBSD
Architecture: i386
Machine: i386
>Description:

On Sep 12, 2020, an automated notice was sent to current-users about
new test failures on i386, including the following:

    usr.bin/c++/t_asan_global_buffer_overflow:global_buffer_overflow
    usr.bin/c++/t_asan_global_buffer_overflow:global_buffer_overflow_pic
    usr.bin/c++/t_asan_global_buffer_overflow:global_buffer_overflow_pie
    usr.bin/c++/t_asan_heap_overflow:heap_overflow
    usr.bin/c++/t_asan_heap_overflow:heap_overflow_pic
    usr.bin/c++/t_asan_heap_overflow:heap_overflow_pie
    usr.bin/c++/t_asan_off_by_one:off_by_one
    usr.bin/c++/t_asan_off_by_one:off_by_one_pic
    usr.bin/c++/t_asan_off_by_one:off_by_one_pie
    usr.bin/c++/t_asan_poison:poison
    usr.bin/c++/t_asan_poison:poison_pic
    usr.bin/c++/t_asan_poison:poison_pie
    usr.bin/c++/t_asan_uaf:uaf
    usr.bin/c++/t_asan_uaf:uaf_pic
    usr.bin/c++/t_asan_uaf:uaf_pie
    usr.bin/cc/t_asan_global_buffer_overflow:global_buffer_overflow
    usr.bin/cc/t_asan_global_buffer_overflow:global_buffer_overflow_pic
    usr.bin/cc/t_asan_global_buffer_overflow:global_buffer_overflow_pie
    usr.bin/cc/t_asan_heap_overflow:heap_overflow
    usr.bin/cc/t_asan_heap_overflow:heap_overflow_pic
    usr.bin/cc/t_asan_heap_overflow:heap_overflow_pie
    usr.bin/cc/t_asan_off_by_one:off_by_one
    usr.bin/cc/t_asan_off_by_one:off_by_one_pic
    usr.bin/cc/t_asan_off_by_one:off_by_one_pie
    usr.bin/cc/t_asan_poison:poison
    usr.bin/cc/t_asan_poison:poison_pic
    usr.bin/cc/t_asan_poison:poison_pie
    usr.bin/cc/t_asan_uaf:uaf
    usr.bin/cc/t_asan_uaf:uaf_pic
    usr.bin/cc/t_asan_uaf:uaf_pie

These are all still failing as of source date 2021.06.27.13.59.29:

  http://releng.netbsd.org/b5reports/i386/2021/2021.06.27.13.59.29/test.html#failed-tcs-summary

The failures started during the period of build breakage between
2020.09.11.06.08.10 and 2020.09.12.12.39.28, which included the commit
whereby i386 was switched to use gcc 9:

    2020.09.12.08.31.39 mrg src/share/mk/bsd.own.mk,v 1.1209

>How-To-Repeat:

Run the ATF tests on i386.

>Fix:
-- 
Andreas Gustafsson, gson%gson.org@localhost