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[Bug binutils/23928] ar crash within LLVMgold.so module

From: nickc at redhat dot com
Subject: [Bug binutils/23928] ar crash within LLVMgold.so module
Date: Wed, 28 Nov 2018 11:30:56 +0000


Nick Clifton <nickc at redhat dot com> changed:

           What    |Removed                     |Added
             Status|NEW                         |UNCONFIRMED
                 CC|                            |nickc at redhat dot com
     Ever confirmed|1                           |0

--- Comment #1 from Nick Clifton <nickc at redhat dot com> ---
Hi Werner,

> ar crashes while calling the LLVMgold.so plugin – this far I was able to the
> debug the issue...
> I've already filed an openSuSE bug report at
>   https://bugzilla.opensuse.org/show_bug.cgi?id=1117239
> together with an MWE to reproduce the issue.

If it is the LLVMgold.so plugin that is actually triggering the crash then
there is nothing that we can do - it is an LLVM problem.  Well unless ar is
calling a function within the plugin and passing it bogus arguments.  But
I think that this is unlikely.

I did try to reproduce the problem on my local machine, but nothing went
wrong - ar completed its task.  I did try modifying the command line
in trigger-ar-crash.sh to include an explicit invocation of the LLVMgold.so
plugin, but it still worked.  It is possible however that the version of
the gold plugin that I have installed is too old.  (It comes from the
llvm-libs-6.0.1-8.fc28.x86_64 rpm available on Fedora 28).  Hence it may
be that this is an openSUSE specific problem...

Are you able to determine more about where the crash is happening and what
exactly is triggering it ?


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