[Bug libc/19792] New: MIPS: backtrace yields infinite backtrace with makecontext

["aurelien at aurel32 dot net" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19792

            Bug ID: 19792
           Summary: MIPS: backtrace yields infinite backtrace with
                    makecontext
           Product: glibc
           Version: 2.23
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: aurelien at aurel32 dot net
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---
              Host: mips-linux-gnu
            Target: mips-linux-gnu
             Build: mips-linux-gnu

The test tst-makecontext fails on MIPS since version 2.23. While it appears to
be a regression, the problem has been present for a long time. The test started
to fail following this commit:

    commit e535ce250143b9c1600b306911710c0de73e2a5e
    Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
    Date:   Thu Feb 11 17:17:38 2016 +0000

        [ARM] add missing -funwind-tables to test case (bug 19529)

        stdlib/tst-makecontext test failed on arm because it used backtrace
        without -funwind-tables.

Patch to fix the issue will follow on the mailing list.

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