[Lldb-commits] [PATCH] D37651: Fix for bug 34532 - A few rough corners related to post-mortem debugging (core/minidump)

Zachary Turner via lldb-commits lldb-commits at lists.llvm.org
Tue Sep 12 09:53:38 PDT 2017

If you had just logged it, the bug would still not be fixed because nobody
would know about it.  I also can't believe we have to keep saying this :-/

On Tue, Sep 12, 2017 at 9:50 AM Greg Clayton <clayborg at gmail.com> wrote:

> Success? No. Log something. Return an error. Anything but crashing.
> Crashing is not acceptable. I can't believe we have to keep saying this.
> On Sep 11, 2017, at 4:39 PM, Zachary Turner via lldb-commits <
> lldb-commits at lists.llvm.org> wrote:
> On Mon, Sep 11, 2017 at 4:22 PM Jason Molenda via lldb-commits <
> lldb-commits at lists.llvm.org> wrote:
>> fwiw the reason the JIT came up is because we had an instance where the
>> older MCJIT wasn't handling a relocation in thumb code about six weeks ago
>> and we only caught the crash a couple days before we released a beta of
>> it.  It definitely can happen with MCJIT.  I think with ORC JIT this is a
>> not going to be a problem -- but it's a good example of a class of problem
>> where the subsystem (jit) considers the failure catastrophic, whereas the
>> user will find another way to do their work.  When it takes the developer
>> an hour to get to the point of failure, they try to print a variable, lldb
>> ingests a ton of debug info and then we crash because some little detail
>> was not valid, or they try to run an expression and the debugger crashes
>> with an unsupported relocation, I can't overstate what an enormous failure
>> of the debugger that is.
> I disagree.  It sounds like a success.  As a result of it crashing six
> weeks ago, you learned the bug exists, and now Lang has fixed it.
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