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Bug report: Debugger crash when using 4.6 backend

Discussion in 'Scripting' started by John-Chen350, Jul 14, 2018.

  1. John-Chen350


    Jan 14, 2015
    Dear all,

    I've found a bug that prevents me from debugging my project anymore. Unity itself crashes again and again when a breakpoint is triggered. The project is a bit complex so I cannot upload it altogether, nor did I find any way to reproduce that in other projects. Yet, I've managed to debug Unity itself in x86 debugger, which shows the crash reason to be:

    Assertion at ..\\mono\\mini\\method-to-ir.c:7604, condition `!sig->has_type_parameters' not met

    Meanwhile, I've examined which method causes the JIT compiler to fail. Surprisingly it turns out to be UnityEngine.Component.GetComponentInParent<T>, not related to my code even for a bit. So it seems that's a Unity bug and I'm using the latest version of LTS release: 2017.4.6 since 2018.2 still don't have Substance's support for mobile platform (what a shame).

    Full stacktrace is attached below.

    Best Regards

    Attached Files:

  2. Peter77


    Jun 12, 2013
    Could you please submit a bug-report as explained in this document:

    Posting crash bugs in the forum does not lead to any resolution in most cases. Unity will most likely not investigate the crash, if you don't submit a bug-report.
    karl_jones likes this.