bugGNU Octave - Bugs: bug #55492, "make check" crashes...


bug #55492: "make check" crashes with jit (llvm 4.0.1)

Submitted by:  Markus Mützel <mmuetzel>
Submitted on:  Wed 16 Jan 2019 07:18:21 PM UTC  
Category:  Interpreter Severity:  3 - Normal
Priority:  3 - Low Item Group:  Segfault, Bus Error, etc.
Status:  Confirmed Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  dev Operating System:  GNU/Linux

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Tue 22 Jan 2019 08:47:55 AM UTC, comment #4:

Nice find.
Can you provide a patch that overloads "findSymbol" and sets the flags correctly? Would that break backward compatibility?

Markus Mützel <mmuetzel>
Project Member
Mon 21 Jan 2019 08:22:20 PM UTC, comment #3:

I think that I have found the explanation in LLVM's 4.0.1 RTDyldMemoryManager.h:

Julien Bect <jbect>
Thu 17 Jan 2019 08:37:32 PM UTC, comment #2:

Here is a minimal example to reproduce the problem:

Julien Bect <jbect>
Thu 17 Jan 2019 05:24:32 PM UTC, comment #1:

Since the JIT is experimental I lowered the priority. I believe Julien knows about the crash with LLVM 4.0.

Rik <rik5>
Project Administrator
Wed 16 Jan 2019 07:18:21 PM UTC, original submission:

On Ubuntu 18.10 with llvm 1:4.0.1-10build1, I configuring with:

Running "make check" crashes at "jit.tst" with:

CC'ing Julien Bect as the author of the updated configure options.

Markus Mützel <mmuetzel>
Project Member


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-01-17 rik5 Priority5 - Normal => 3 - Low
        StatusNone => Confirmed
    2019-01-16 mmuetzel Carbon-Copy- => Added jbect

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