Just got a crash, and the debug log is nothing but ping events from the IRC server like
-> irc.mzima.net PING :TIMEOUTCHECK
<- :irc.mzima.net PONG irc.mzima.net :TIMEOUTCHECK
It's the same heap corruption exception. Here is the output of a !analyze -v on the most recent dump file.
*******************************************************************************
* *
* Exception Analysis *
* *
*******************************************************************************


KEY_VALUES_STRING: 1

Key : Analysis.CPU.mSec
Value: 781

Key : Analysis.Elapsed.mSec
Value: 6910

Key : Analysis.IO.Other.Mb
Value: 34

Key : Analysis.IO.Read.Mb
Value: 0

Key : Analysis.IO.Write.Mb
Value: 63

Key : Analysis.Init.CPU.mSec
Value: 374

Key : Analysis.Init.Elapsed.mSec
Value: 11898

Key : Analysis.Memory.CommitPeak.Mb
Value: 145

Key : Failure.Bucket
Value: HEAP_CORRUPTION_c0000374_heap_corruption!mirc.exe

Key : Failure.Hash
Value: {285ccbe2-15b7-d2e1-8f52-6cd93f97d554}

Key : Timeline.OS.Boot.DeltaSec
Value: 31580

Key : Timeline.Process.Start.DeltaSec
Value: 31537

Key : WER.OS.Branch
Value: ge_release

Key : WER.OS.Version
Value: 10.0.26100.1

Key : WER.Process.Version
Value: 7.77.0.0


FILE_IN_CAB: mirc.exe.6920.dmp

NTGLOBALFLAG: 0

APPLICATION_VERIFIER_FLAGS: 0

CONTEXT: (.ecxr)
eax=0f4df638 ebx=0ed29b68 ecx=0f4df668 edx=77ee1968 esi=00000002 edi=0ed20000
eip=77ea7f8f esp=0f4df610 ebp=0f4df648 iopl=0 nv up ei pl zr na pe nc
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000246
ntdll!RtlReportFatalFailure+0x16:
77ea7f8f eb33 jmp ntdll!RtlReportFatalFailure+0x4b (77ea7fc4)
Resetting default scope

EXCEPTION_RECORD: (.exr -1)
ExceptionAddress: 77ea7f8f (ntdll!RtlReportFatalFailure+0x00000016)
ExceptionCode: c0000374
ExceptionFlags: 00000001
NumberParameters: 1
Parameter[0]: 77ee1968

PROCESS_NAME: mirc.exe

ERROR_CODE: (NTSTATUS) 0xc0000374 - A heap has been corrupted.

EXCEPTION_CODE_STR: c0000374

EXCEPTION_PARAMETER1: 77ee1968

ADDITIONAL_DEBUG_TEXT: Enable Pageheap/AutoVerifer ; Followup set based on attribute [Is_ChosenCrashFollowupThread] from Frame:[0] on thread:[PSEUDO_THREAD]

FAULTING_THREAD: 00005608

STACK_TEXT:
00000000 00000000 heap_corruption!mirc.exe+0x0


STACK_COMMAND: ** Pseudo Context ** ManagedPseudo ** Value: ffffffff ** ; kb

SYMBOL_NAME: heap_corruption!mirc.exe

MODULE_NAME: heap_corruption

IMAGE_NAME: heap_corruption

FAILURE_BUCKET_ID: HEAP_CORRUPTION_c0000374_heap_corruption!mirc.exe

OS_VERSION: 10.0.26100.1

BUILDLAB_STR: ge_release

OSPLATFORM_TYPE: x86

OSNAME: Windows 10

FAILURE_ID_HASH: {285ccbe2-15b7-d2e1-8f52-6cd93f97d554}

Followup: MachineOwner
---------