llvm dev - Jan 2019 - [compiler-rt] Windows report output options

Devs,

I'm about to start some work to fix some Windows issues for 9.0.0, and
I'd like to gather input before I start. I would like to add an option to
dump output to a debugger via OutputDebugString along with stdout/stderr. A
later addition to this could be an option to output sanitizer reports as Windows
events. It seems like there is a similar feature for outputting to syslog for
OSX and Android, I would probably take a similar approach.

Are there any objections/suggestions?

-Matthew McGovern

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Hi! I work on Mozilla's Windows builds and would be interested in
following along with your progress.

The OutputDebugString sounds like it would be useful in my work. I
don't personally have a use case for the event logging, but I don't
have any particular objection, either.

Something on my wish-list that I've been meaning to write a patch for
but never found time, is the ability to turn off
sys::PrintStackTraceOnErrorSignal completely, and let Windows pass
exceptions to my default postmortem debugger. (I see that there's an
LLVM_DISABLE_CRASH_REPORT variable, but it looks like it would still
exit the app upon an exception, which makes it hard to sprinkle
__debugbreak()'s around for local investigations.)

On Mon, Jan 28, 2019 at 12:49 PM Matthew McGovern via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Devs,
>
>
>
> I’m about to start some work to fix some Windows issues for 9.0.0, and I’d
like to gather input before I start. I would like to add an option to dump
output to a debugger via OutputDebugString along with stdout/stderr. A later
addition to this could be an option to output sanitizer reports as Windows
events. It seems like there is a similar feature for outputting to syslog for
OSX and Android, I would probably take a similar approach.
>
>
>
> Are there any objections/suggestions?
>
>
>
> -Matthew McGovern
>
>
>
> _______________________________________________
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> llvm-dev at lists.llvm.org
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