Bug 60928 - Mono crashes when debugging dynamically generated assembly
Summary: Mono crashes when debugging dynamically generated assembly
Status: NEW
Alias: None
Product: Runtime
Classification: Mono
Component: Debugger ()
Version: 5.4 (2017-06)
Hardware: PC All
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2017-11-30 13:07 UTC by Artem Bukhonov
Modified: 2017-12-04 12:46 UTC (History)
4 users (show)

Is this bug a regression?: ---
Last known good build:

Test solution (12.85 KB, application/x-zip-compressed)
2017-11-30 13:07 UTC, Artem Bukhonov

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Description Artem Bukhonov 2017-11-30 13:07:03 UTC
Created attachment 25872 [details]
Test solution

When I have a local object which was generated using Moq framework mono just crashes on step.
Tried both on Win and on Mac
Comment 1 Artem Bukhonov 2017-11-30 13:11:21 UTC
P.S. Rider was used for debugging https://www.jetbrains.com/rider/
Comment 2 Artem Bukhonov 2017-11-30 13:26:47 UTC
Crash log on Mac:
/Library/Frameworks/Mono.framework/Versions/Current/bin/mono --debug --debugger-agent=transport=dt_socket,server=y,suspend=y,address=,setpgid=y "/Users/artem.bukhonov/Library/Application Support/JetBrains/Toolbox/apps/Rider/ch-1/173.3801.677/Rider EAP.app/Contents/lib/ReSharperHost/JetBrains.ReSharper.TaskRunner.CLR45.x64.exe" 62909 b8447322-a25b-489e-bfb7-01fb91499255
mono(24498,0x7000017ea000) malloc: *** error for object 0x1422080: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug

Native stacktrace:

        0   mono                                0x000000010107a541 mono_handle_native_crash + 257
        1   libsystem_platform.dylib            0x00007fff76e0ff5a _sigtramp + 26
        2   libsystem_malloc.dylib              0x00007fff76d4e758 tiny_free_no_lock + 570
        3   libsystem_c.dylib                   0x00007fff76c3b30a abort + 127
        4   libsystem_malloc.dylib              0x00007fff76d38866 free + 521
        5   mono                                0x000000010124ff7d mono_error_cleanup + 77
        6   mono                                0x00000001010ad85e type_commands_internal + 7966
        7   mono                                0x000000010109ee3b debugger_thread + 1915
        8   mono                                0x0000000101198463 start_wrapper + 675
        9   libsystem_pthread.dylib             0x00007fff76e196c1 _pthread_body + 340
        10  libsystem_pthread.dylib             0x00007fff76e1956d _pthread_body + 0
        11  libsystem_pthread.dylib             0x00007fff76e18c5d thread_start + 13

Debug info from gdb:

mono_gdb_render_native_backtraces not supported on this platform, unable to find gdb or lldb

Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
Comment 3 Zoltan Varga 2017-12-02 09:38:20 UTC
Which mono version is this ?
Comment 4 Artem Bukhonov 2017-12-04 12:46:59 UTC
Windows: 5.4.1