Simulink/Matlab crashes while running an sfunction mex file

Hello,

I am trying to run a Simulink simulation which has a mex file based s-function. Whenever I run it, Matlab crashes. I do not have access to the sfunction. Just the mex file. Here is the crash log. We are using Matlab 2015b 32 bit.

------------------------------------------------------------------------

Access violation detected at Sun Oct 27 11:21:57 2019

------------------------------------------------------------------------

Configuration:

Crash Decoding : Disabled

Crash Mode : continue (default)

Current Graphics Driver: ATI Technologies Inc. AMD Radeon R7 M270 Version 4.4.13397 Compatibility Profile Context 0

Default Encoding : windows-1252

Graphics card 1 : Intel Corporation ( 0x8086 ) Intel(R) HD Graphics 5500 Version 20.19.15.4531

Graphics card 2 : Advanced Micro Devices, Inc. ( 0x1002 ) AMD Radeon R7 M270 Version 15.200.1045.0

Host Name : dell

MATLAB Architecture : win32

MATLAB Root : C:\Program Files (x86)\MATLAB\R2015b

MATLAB Version : 8.6.0.267246 (R2015b)

OpenGL : hardware

Operating System : Microsoft Windows 10 Home Single Language

Processor ID : x86 Family 6 Model 61 Stepping 4, GenuineIntel

Virtual Machine : Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot(TM) Client VM mixed mode

Window System : Version 10.0 (Build 17134)

Fault Count: 1

Abnormal termination:

Access violation

Register State (from fault):

EAX = 00000001 EBX = 00000001

ECX = 00d00000 EDX = 00d00000

ESP = 00c2c724 EBP = 00c2c748

ESI = 678b6468 EDI = a654ed40

EIP = 00000000 EFL = 00010297

CS = 00000023 DS = 0000002b SS = 0000002b

ES = 0000002b FS = 00000053 GS = 0000002b

Stack Trace (from fault):

[ 0] 0x00000000 <unknown-module>+00000000

[ 1] 0x678b1d72 C:\updated\mp_replace_sim.mexw32+00007538

[ 2] 0x678b2175 C:\updated\mp_replace_sim.mexw32+00008565

[ 3] 0x481fddc7 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+11918791 slSetStateflowChartAccessesModelInfo+00114183

[ 4] 0x481ddde8 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+11787752 slRegisterPrmAssoc+00166040

[ 5] 0x48056c94 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+10185876 EnableBlockPortPositioningBlocker+00001300

[ 6] 0x47c3449b C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+05850267 BlockSetRequireVarDimsInputChecker+00004171

[ 7] 0x47b244d6 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+04736214 DomainSubgraphTgtInfo::setHasSignalGateways+00005110

[ 8] 0x47acfacb C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+04389579 DomainSubgraph::GetGrOwner+00052651

[ 9] 0x47bf8656 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+05604950 sl::MappingManager::getModelMappingsFor+00011814

[ 10] 0x4824640c C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+12215308 slmsg::ImplicitQueueIntrf::setDropPolicy+00026876

[ 11] 0x70b1a029 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\sl_solver.dll+00303145 sl_solver::SimStepFS::advanceStep+00000025

[ 12] 0x4821c03f C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+12042303 slmsg::QueueIntrfBase::getStorageReaderMessageMemoryPoolIndex+00103567

[ 13] 0x4821bd36 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+12041526 slmsg::QueueIntrfBase::getStorageReaderMessageMemoryPoolIndex+00102790

[ 14] 0x47bc1838 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+05380152 SetupToQueryCompiledInfo+00006408

[ 15] 0x476ba27a C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+00107130 SLGlue::SLGlueServicesRegistry::operator=+00009946

[ 16] 0x476ba1b9 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwsimulink.dll+00106937 SLGlue::SLGlueServicesRegistry::operator=+00009753

[ 17] 0x7b6cf8b9 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00129209 set_event_rec+00000649

[ 18] 0x7b6d9423 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00168995 UIW_ShowMenuItem+00005651

[ 19] 0x7b6d615e C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00155998 uiwRegisterPpeCondition+00000430

[ 20] 0x7ba89326 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwbridge.dll+00037670 ioReadLine+00003830

[ 21] 0x7ba885f8 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwbridge.dll+00034296 ioReadLine+00000456

[ 22] 0x7ba882e0 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwbridge.dll+00033504 ioCmdLineEditSave+00011472

[ 23] 0x7ba88415 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwbridge.dll+00033813 ioReadLine+00000117

[ 24] 0x7ba92258 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwbridge.dll+00074328 mnDebugPrompt+00001304

[ 25] 0x7ba91e52 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwbridge.dll+00073298 mnDebugPrompt+00000274

[ 26] 0x7ba924be C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwbridge.dll+00074942 mnParser+00000446

[ 27] 0x06c26373 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00353139 mcrInstance::mnParser_on_interpreter_thread+00000051

[ 28] 0x06bfb275 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00176757 mcr::runtime::setInterpreterThreadToCurrent+00017765

[ 29] 0x06bfb2e6 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00176870 mcr::runtime::setInterpreterThreadToCurrent+00017878

[ 30] 0x06bfcabf C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00182975 mcr::runtime::setInterpreterThreadToCurrent+00023983

[ 31] 0x06bfca12 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00182802 mcr::runtime::setInterpreterThreadToCurrent+00023810

[ 32] 0x06bfba66 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00178790 mcr::runtime::setInterpreterThreadToCurrent+00019798

[ 33] 0x7b72669b C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00485019 UIW_AttachThreadInput+00000843

[ 34] 0x7b7260d7 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00483543 wsd_to_MSW+00004023

[ 35] 0x7b72618b C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00483723 wsd_to_MSW+00004203

[ 36] 0x7703a5fe C:\WINDOWS\System32\USER32.dll+00173566 GetAsyncKeyState+00000670

[ 37] 0x7704a671 C:\WINDOWS\System32\USER32.dll+00239217 SystemParametersInfoW+00001089

[ 38] 0x7704a5fb C:\WINDOWS\System32\USER32.dll+00239099 SystemParametersInfoW+00000971

[ 39] 0x773fcd3d C:\WINDOWS\SYSTEM32\ntdll.dll+00445757 KiUserCallbackDispatcher+00000077

[ 40] 0x77035c1a C:\WINDOWS\System32\USER32.dll+00154650 PeekMessageA+00000346

[ 41] 0x7b6d918a C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00168330 UIW_ShowMenuItem+00004986

[ 42] 0x7b726ff4 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\uiw.dll+00487412 UIW_SuspendAttachThreadInput+00000708

[ 43] 0x00f62434 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwservices.dll+01451060 services::system_events::PpeDispatchHook::dispatchOne+00029092

[ 44] 0x00f6ed56 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwservices.dll+01502550 sysq::addProcessPendingEventsUnitTestHook+00007942

[ 45] 0x00f604be C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwservices.dll+01443006 services::system_events::PpeDispatchHook::dispatchOne+00021038

[ 46] 0x00f6ee01 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwservices.dll+01502721 sysq::addProcessPendingEventsUnitTestHook+00008113

[ 47] 0x00f707a9 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwservices.dll+01509289 sysq::getCondition+00003833

[ 48] 0x00f71f2b C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwservices.dll+01515307 svWS_ProcessPendingEvents+00000139

[ 49] 0x00f71e90 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\libmwservices.dll+01515152 svWS_ProcessPendingEvents+00000016

[ 50] 0x06bfc111 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00180497 mcr::runtime::setInterpreterThreadToCurrent+00021505

[ 51] 0x06bfcc8d C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00183437 mcr::runtime::setInterpreterThreadToCurrent+00024445

[ 52] 0x06bf516f C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00151919 mcr_process_events+00006879

[ 53] 0x06bf6b93 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mcr.dll+00158611 mcr_process_events+00013571

[ 54] 0x06b72e3d C:\Program Files (x86)\MATLAB\R2015b\bin\win32\MVMLocal.dll+00208445 mvm_server::inproc::LocalFactory::terminate+00079565

[ 55] 0x7b421681 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mvm.dll+01054337 mvm::detail::initLocalMvmHack+00000433

[ 56] 0x7b42084b C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mvm.dll+01050699 mvm::detail::RequestMvmMessage::toString+00007787

[ 57] 0x7b421cad C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mvm.dll+01055917 mvm::detail::SessionImpl::privateSession+00000285

[ 58] 0x7b421e60 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\mvm.dll+01056352 mvm::detail::SessionImpl::privateSession+00000720

[ 59] 0x00405e2a C:\Program Files (x86)\MATLAB\R2015b\bin\win32\MATLAB.exe+00024106

[ 60] 0x00407747 C:\Program Files (x86)\MATLAB\R2015b\bin\win32\MATLAB.exe+00030535

[ 61] 0x74f28494 C:\WINDOWS\System32\KERNEL32.DLL+00099476 BaseThreadInitThunk+00000036

[ 62] 0x773f41c8 C:\WINDOWS\SYSTEM32\ntdll.dll+00410056 RtlAreBitsSet+00000136

[ 63] 0x773f4198 C:\WINDOWS\SYSTEM32\ntdll.dll+00410008 RtlAreBitsSet+00000088

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Thank you for your help.