[Patch] Make errors and crashes distinct even with LLVM_DISABLE_CRASH_REPORT

[Rafael Espíndola]

On 25 July 2013 14:34, Reid Kleckner <rnk at google.com> wrote:
> AvoidMessageBoxHook does "*Return = 1" while CRTReportHook sets it to zero.
> Setting it to one is what gives us the stack trace, but it may also trigger
> the just in time debugger.  I'm really not sure what controls the system
> crash dialog, unfortunately.  Does someone else know more?

I am not sure, but it doesn't pop up in my VM and I do have msvc working.

This is the last thing blocking enabling pipefail. Would you be ok
with experimenting with it? That is, checking it in and watching the
bots?

Cheers,
Rafael