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List: gdb
Subject: Re: JIT debugging (Attach and speed)
From: Pedro Alves <palves () redhat ! com>
Date: 2016-03-22 16:15:11
Message-ID: 56F16F8F.9050404 () redhat ! com
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On 03/22/2016 03:46 PM, Pedro Alves wrote:
>> 2. JIT code registration on attach is broken.
>>
>> When I set a breakpoint on `jit_inferior_init`[3] (i.e. lauching
>> gdb with `gdb --args gdb -p <pid_to_debug>`) which IIUC is what
>> responsible for walking the jit object list at init time, it seems
>> that the function is never called.
>>
>> (I haven't seen a bug report about this yet)
>
> Do you know whether this happens with 7.11 and master, and if so,
> would it be possible for you to git bisect the culprit?
Currently, jit_inferior_created_hook -> jit_inferior_init is only
called when the inferior execs...
Grepping around, I think that might have been
the fix for PR gdb/13431 (03bef283c2d3):
https://sourceware.org/ml/gdb-patches/2012-02/msg00023.html
which removed the inferior_created (jit_inferior_created_observer).
Adding an inferior_created observer back likely fixes the issue.
Thanks,
Pedro Alves
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