[Bug binutils/27270] New: ar segfaults trying to build virtualbox guest additions

[pprkut at slackware dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27270

            Bug ID: 27270
           Summary: ar segfaults trying to build virtualbox guest
                    additions
           Product: binutils
           Version: 2.36
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: pprkut at slackware dot com
  Target Milestone: ---

I'm trying to build the virtualbox guest additions on Slackware-current
(2021-01-26). When trying to link a static lib ar segfaults.

kBuild: Linking RuntimeBldProg
kmk: *** [/tmp/VirtualBox-6.1.18/kBuild/footer-pass2-compiling-targets.kmk:515:
/tmp/VirtualBox-6.1.18/out/linux.amd64/release/obj/RuntimeBldProg/RuntimeBldProg.a]
Segmentation fault
The failing command:
@kmk_builtin_redirect -rti
/tmp/VirtualBox-6.1.18/out/linux.amd64/release/obj/RuntimeBldProg/RuntimeBldProg.a.ar-script
-- ar -M

backtrace:

#0  0x00007ffff7ccf980 in fileno_unlocked () from /lib64/libc.so.6
#1  0x0000000000408202 in ar_save () at arsup.c:358
#2  0x0000000000404cd2 in yyparse () at arparse.y:131
#3  0x0000000000403f0f in mri_emul () at ar.c:185
#4  main (argc=<optimized out>, argv=<optimized out>) at ar.c:789

I can reproduce this reliably so in case there's extra information needed
please let me know.

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