[Mono-dev] JIT compiler crashes application

[Rodrigo Kumpera]

Filed under https://bugzilla.xamarin.com/show_bug.cgi?id=8905

Thanks.

On Wed, Dec 12, 2012 at 5:06 AM, Andrii Nakryiko
<andrii.nakryiko at gmail.com>wrote:

> From readme:
>
> mono-jit-crash-repro
> ====================
>
> Reproduction of problems with Mono JIT crashing.
>
> To run reproduce, compile the solution and run **run.sh** script which
> will start the binary in a loop until the program crashes. It usually
> doesn't take long for crash or segmentation fault to occur, though it can
> take up to few thousands runs.
>
> There are two classes that reproduces two bugs:
>
>   * **ReproJitCrash.cs** reproduces JIT crash most of the times. Rarely it
> also causes segmentation fault without any stack traces.
>   * **ReproSegFault.cs** reproduces segmenation fault with no stack trace
> (as mentioned previously).
>
> The only difference between those two cases is in using *struct* vs
> *class* with **using** statement (see LockReleaserStruct/LockReleaserClass).
>
> Also, it seems essential to have Monitor.Enter/Monitor.Exit, without them
> it's not reproducible (or at least I didn't have patience to wait for crash
> to happen).
>
> Hope that helps to identify and fix the problem.
>
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