Matlab crashes after mex from cpp

2019 8 4
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更新时间：2019 10 23
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Hello
I usually have my Matlab crashes after the succesfully completion of mex from cpp to mexmaci64. It gives a warning message that an internal error occured and needs to shut down and it prompts me either send a report to Matlab or not.
I need to try maybe more than 6-8 times to make it run without crashing. After multiple attemps, it will eventually finishes running without crashing. Any idea why this might happen?

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Here is the crash report. Any help?
MATLAB crash file:/Users/steliosphanourakes/matlab_crash_dump.67224-1:
--------------------------------------------------------------------------------
Segmentation violation detected at Sun Aug 04 18:14:35 2019 +0100
--------------------------------------------------------------------------------
Configuration:
Crash Decoding : Disabled - No sandbox or build area path
Crash Mode : continue (default)
Default Encoding : UTF-8
Deployed : false
Graphics Driver : Unknown hardware
Java Version : Java 1.8.0_152-b16 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
MATLAB Architecture : maci64
MATLAB Entitlement ID : 4798894
MATLAB Root : /Applications/MATLAB_R2018b.app
MATLAB Version : 9.5.0.944444 (R2018b)
OpenGL : hardware
Operating System : Mac OS Version 10.14.5 (Build 18F132)
Process ID : 67224
Processor ID : x86 Family 6 Model 61 Stepping 4, GenuineIntel
Session Key : dad9a3aa-4b2c-4508-a025-a5193eb3f79a
Window System : Quartz
Fault Count: 1
Abnormal termination
Register State (from fault):
RAX = 00000000003fac00 RBX = 00000000003fac00
RCX = 000000017cea6020 RDX = 000000000000028c
RSP = 00000000003fac00 RBP = 00000000003fac00
RSI = 00007fff7b21dd79 RDI = 0000700003bc4940
R8 = 0000700003bc4960 R9 = 00007fff782f2378
R10 = 00000000003fac00 R11 = 000000000007f580
R12 = 0000700003bc49d0 R13 = 0000000173e2390f
R14 = 0000000000000000 R15 = 0000700003bc4bf8
RIP = 0000000000000320 RFL = 000000010d4b103e
CS = 0000600003c91c50 FS = 000000000000028c GS = 0000600003c91c50
Stack Trace (from fault):
[ 0] 0x000000010b0c9dd1 bin/maci64/libmwfl.dylib+00007633 _ZN10foundation4core4diag15stacktrace_base7captureERKNS1_14thread_contextEm+00000049
[ 1] 0x000000010b0cf4b5 bin/maci64/libmwfl.dylib+00029877 _ZN10foundation4core4test17terminate_handledEv+00006181
[ 2] 0x000000010b0cd9f5 bin/maci64/libmwfl.dylib+00023029 _ZN10foundation4core4diag13terminate_logEPKcPK17__darwin_ucontext+00000149
[ 3] 0x000000010fcfd67b bin/maci64/libmwmcr.dylib+00632443 _Z19mnPrintErrorMessageRKNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+00012635
[ 4] 0x000000010fcfb207 bin/maci64/libmwmcr.dylib+00623111 _Z19mnPrintErrorMessageRKNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+00003303
[ 5] 0x000000010fcf8d64 bin/maci64/libmwmcr.dylib+00613732 mnFatalSignalHandler+00000148
[ 6] 0x00007fff7b25eb5d /usr/lib/system/libsystem_platform.dylib+00019293 _sigtramp+00000029
[ 7] 0x0000600003c88e10 <unknown-module>+00000000
[ 8] 0x0000000110d834bc bin/maci64/libmex.dylib+00242876 _ZNK18C_DispatchStrategy8dispatchEiPP11mxArray_tagiS2_+00000140
[ 9] 0x0000000110d83a6d bin/maci64/libmex.dylib+00244333 _ZNK24SCCompatDispatchStrategy8dispatchEiPP11mxArray_tagiS2_+00000061
[ 10] 0x0000000110d83274 bin/maci64/libmex.dylib+00242292 _ZN7Mfh_mex30dispatch_file_with_protectionsEiPP11mxArray_tagiS2_+00000484
[ 11] 0x0000000110d6adbf bin/maci64/libmex.dylib+00142783 _ZN7Mfh_mex13dispatch_fileEiPP11mxArray_tagiS2_+00000159
[ 12] 0x000000010fe3e40a bin/maci64/libmwm_dispatcher.dylib+00500746 _ZN8Mfh_file16dispatch_fh_implEMS_FviPP11mxArray_tagiS2_EiS2_iS2_+00000746
[ 13] 0x000000010fe3e593 bin/maci64/libmwm_dispatcher.dylib+00501139 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+00000035
[ 14] 0x00000001117e0fd7 bin/maci64/libmwm_lxe.dylib+09338839 _ZN9MathWorks3lxe17LxeDispatcherImpl12apply_handleEPNS0_29DispatcherFunctionHandleTokenEmPNS0_6xvalueEmPKS4_NS0_9ApplyTypeE+00001303
[ 15] 0x00000001118e02eb bin/maci64/libmwm_lxe.dylib+10384107 _ZN9MathWorks3lxe12apply_handleEPvNS_2ts4TypeEPKvS1_S1_+00000507
[ 16] 0x000000011183ecde bin/maci64/libmwm_lxe.dylib+09723102 _ZN9MathWorks3lxe38cpp_primitive_template_fn_with_contextIXadL_ZNS0_12apply_handleEPvNS_2ts4TypeEPKvS2_S2_EEEEbS2_S4_S6_S2_S2_+00000014
[ 17] 0x0000000111073740 bin/maci64/libmwm_lxe.dylib+01550144 _ZN9MathWorks3lxe13IrInterpreter17ApplyCppPrimitiveEPN2ir4termES4_RKNS_2ts4TypeES8_+00000448
[ 18] 0x0000000111072ad2 bin/maci64/libmwm_lxe.dylib+01546962 _ZN9MathWorks3lxe13IrInterpreter31process_application_of_constantEPN2ir4termE+00001202
[ 19] 0x000000011107132d bin/maci64/libmwm_lxe.dylib+01540909 _ZN9MathWorks3lxe13IrInterpreter13applyConstantEPN2ir4termE+00000077
[ 20] 0x000000011106cd13 bin/maci64/libmwm_lxe.dylib+01522963 _ZN9MathWorks3lxe12IRTreeWalker9applyTermEPN2ir4termE+00000099
[ 21] 0x000000011106cfb9 bin/maci64/libmwm_lxe.dylib+01523641 _ZN9MathWorks3lxe12IRTreeWalker11getNextIRPCENS0_9irpc_typeE+00000217
[ 22] 0x00000001110710c7 bin/maci64/libmwm_lxe.dylib+01540295 _ZN9MathWorks3lxe13IrInterpreter9tree_walkERKNS0_9irpc_typeES4_+00000215
[ 23] 0x0000000111070fab bin/maci64/libmwm_lxe.dylib+01540011 _ZN9MathWorks3lxe13IrInterpreter9InterpretEv+00000091
[ 24] 0x000000011117efaf bin/maci64/libmwm_lxe.dylib+02645935 _ZN9MathWorks3lxe15ExecutionDriver9ThreadRunEv+00000911
[ 25] 0x0000000111184107 bin/maci64/libmwm_lxe.dylib+02666759 _ZN9MathWorks3lxe12IrEngineImpl5ApplyERKN2ir4termEPvS6_+00000295
[ 26] 0x00000001116bc0b9 bin/maci64/libmwm_lxe.dylib+08138937 _ZN9MathWorks3lxe17IrEngineDecorator5ApplyERKN2ir4termEPvS6_+00000153
[ 27] 0x00000001117d7bf9 bin/maci64/libmwm_lxe.dylib+09300985 _ZN9MathWorks3lxe27FileBasedMatlabCodeFunction14DispatchScriptEiPP11mxArray_tagiS4_+00000297
[ 28] 0x00000001117d7e51 bin/maci64/libmwm_lxe.dylib+09301585 _ZN9MathWorks3lxe27FileBasedMatlabCodeFunction12DispatchFileEiPP11mxArray_tagiS4_b+00000129
[ 29] 0x000000010fe3e40a bin/maci64/libmwm_dispatcher.dylib+00500746 _ZN8Mfh_file16dispatch_fh_implEMS_FviPP11mxArray_tagiS2_EiS2_iS2_+00000746
[ 30] 0x000000010fe3e593 bin/maci64/libmwm_dispatcher.dylib+00501139 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+00000035
[ 31] 0x00000001117e0fd7 bin/maci64/libmwm_lxe.dylib+09338839 _ZN9MathWorks3lxe17LxeDispatcherImpl12apply_handleEPNS0_29DispatcherFunctionHandleTokenEmPNS0_6xvalueEmPKS4_NS0_9ApplyTypeE+00001303
[ 32] 0x00000001118e0989 bin/maci64/libmwm_lxe.dylib+10385801 _ZN9MathWorks3lxe16ans_apply_handleEPvNS_2ts4TypeEPKvS1_S1_+00000361
[ 33] 0x000000011183ed5e bin/maci64/libmwm_lxe.dylib+09723230 _ZN9MathWorks3lxe38cpp_primitive_template_fn_with_contextIXadL_ZNS0_16ans_apply_handleEPvNS_2ts4TypeEPKvS2_S2_EEEEbS2_S4_S6_S2_S2_+00000014
[ 34] 0x0000000111073740 bin/maci64/libmwm_lxe.dylib+01550144 _ZN9MathWorks3lxe13IrInterpreter17ApplyCppPrimitiveEPN2ir4termES4_RKNS_2ts4TypeES8_+00000448
[ 35] 0x0000000111072ad2 bin/maci64/libmwm_lxe.dylib+01546962 _ZN9MathWorks3lxe13IrInterpreter31process_application_of_constantEPN2ir4termE+00001202
[ 36] 0x000000011107132d bin/maci64/libmwm_lxe.dylib+01540909 _ZN9MathWorks3lxe13IrInterpreter13applyConstantEPN2ir4termE+00000077
[ 37] 0x000000011106cd13 bin/maci64/libmwm_lxe.dylib+01522963 _ZN9MathWorks3lxe12IRTreeWalker9applyTermEPN2ir4termE+00000099
[ 38] 0x000000011106cfb9 bin/maci64/libmwm_lxe.dylib+01523641 _ZN9MathWorks3lxe12IRTreeWalker11getNextIRPCENS0_9irpc_typeE+00000217
[ 39] 0x00000001110710c7 bin/maci64/libmwm_lxe.dylib+01540295 _ZN9MathWorks3lxe13IrInterpreter9tree_walkERKNS0_9irpc_typeES4_+00000215
[ 40] 0x0000000111070fab bin/maci64/libmwm_lxe.dylib+01540011 _ZN9MathWorks3lxe13IrInterpreter9InterpretEv+00000091
[ 41] 0x000000011117efaf bin/maci64/libmwm_lxe.dylib+02645935 _ZN9MathWorks3lxe15ExecutionDriver9ThreadRunEv+00000911
[ 42] 0x0000000111184107 bin/maci64/libmwm_lxe.dylib+02666759 _ZN9MathWorks3lxe12IrEngineImpl5ApplyERKN2ir4termEPvS6_+00000295
[ 43] 0x00000001116bc0b9 bin/maci64/libmwm_lxe.dylib+08138937 _ZN9MathWorks3lxe17IrEngineDecorator5ApplyERKN2ir4termEPvS6_+00000153
[ 44] 0x000000011166b609 bin/maci64/libmwm_lxe.dylib+07808521 _ZN9MathWorks3lxe9Evaluator15ApplyStatementsERKNSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEERKN2ir4termERNS0_18IEvaluationContextE+00000425
[ 45] 0x000000011166f0ee bin/maci64/libmwm_lxe.dylib+07823598 _ZN9MathWorks3lxe9Evaluator17EvalStatementImplERKNSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEERNS0_18IEvaluationContextE+00000206
[ 46] 0x000000011166f1ba bin/maci64/libmwm_lxe.dylib+07823802 _ZN9MathWorks3lxe9Evaluator13EvalStatementERKNSt3__112basic_stringIDsNS2_11char_traitsIDsEENS2_9allocatorIDsEEEERNS0_18IEvaluationContextE+00000106
[ 47] 0x00000001116f7b87 bin/maci64/libmwm_lxe.dylib+08383367 _ZN9MathWorks3lxe9LxeBridge7EvalCmdERKNSt3__112basic_stringIDsNS2_11char_traitsIDsEENS2_9allocatorIDsEEEEb+00000327
[ 48] 0x00000001116f7a77 bin/maci64/libmwm_lxe.dylib+08383095 _ZN9MathWorks3lxe9LxeBridge7EvalCmdERKNSt3__112basic_stringIDsNS2_11char_traitsIDsEENS2_9allocatorIDsEEEEb+00000055
[ 49] 0x0000000110e8ed8d bin/maci64/libmwbridge.dylib+00073101 _Z8mnParserv+00000653
[ 50] 0x000000010fc928c9 bin/maci64/libmwmcr.dylib+00194761 _ZN3mcr7runtime26InterpreterThreadSingleton4Impl16break_event_loopERKN7mwboost10shared_ptrIS2_EE+00003369
[ 51] 0x000000010fc92bf9 bin/maci64/libmwmcr.dylib+00195577 _ZN3mcr7runtime26InterpreterThreadSingleton4Impl16break_event_loopERKN7mwboost10shared_ptrIS2_EE+00004185
[ 52] 0x000000010fc6f1f5 bin/maci64/libmwmcr.dylib+00049653 _ZN14cmddistributor15PackagedTaskIIP13getTypeStringIvEENSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEEv+00000917
[ 53] 0x000000010fc6f137 bin/maci64/libmwmcr.dylib+00049463 _ZN14cmddistributor15PackagedTaskIIP13getTypeStringIvEENSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEEv+00000727
[ 54] 0x000000010fc6f0e2 bin/maci64/libmwmcr.dylib+00049378 _ZN14cmddistributor15PackagedTaskIIP13getTypeStringIvEENSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEEv+00000642
[ 55] 0x000000010fb6f74e bin/maci64/libmwiqm.dylib+00366414 _ZN7mwboost6detail8function21function_obj_invoker0INSt3__18functionIFNS_3anyEvEEES5_E6invokeERNS1_15function_bufferE+00000030
[ 56] 0x000000010fb6f16b bin/maci64/libmwiqm.dylib+00364907 _ZN3iqm18PackagedTaskPlugin7executeEP15inWorkSpace_tag+00000251
[ 57] 0x000000010fb50b5f bin/maci64/libmwiqm.dylib+00240479 _ZNK3iqm17DefaultPacketInfo7executeEP15inWorkSpace_tag+00000799
[ 58] 0x000000010fb3499b bin/maci64/libmwiqm.dylib+00125339 _ZN3iqm10DefaultIqm13dequeueHelperEN7mwboost8optionalImEERKNSt3__112basic_stringIDsNS4_11char_traitsIDsEENS4_9allocatorIDsEEEEN6mlutil14cmddistributor13WhenToDequeue13WhenToDequeueERKNS4_8functionIFbRKNS4_5tupleIJSG_NS1_10shared_ptrINS_22IntermediatePacketInfoEEESA_EEEEEE+00001195
[ 59] 0x000000010fb28dca bin/maci64/libmwiqm.dylib+00077258 _ZN3iqm10DefaultIqm7dequeueEN6mlutil14cmddistributor13WhenToDequeue13WhenToDequeueEN7mwboost8optionalImEE+00000362
[ 60] 0x000000010fb3a766 bin/maci64/libmwiqm.dylib+00149350 _ZN3tbb10interface519concurrent_hash_mapIN6mlutil10contextmgr5McrIDEN7mwboost10shared_ptrIN3iqm17DebugEventHandlerEEEN10foundation7msg_svc10threadutil4HashIS4_EENS_13tbb_allocatorINSt3__14pairIS4_S9_EEEEE28allocate_node_copy_constructERNSF_INSK_4nodeEEERKS4_PKS9_+00006198
[ 61] 0x0000000108cbf8e5 bin/maci64/libmwservices.dylib+01239269 _Z40svWS_ProcessPendingEventsWithLimitedRateb+00003301
[ 62] 0x0000000108cbe0f6 bin/maci64/libmwservices.dylib+01233142 _Z25svWS_ProcessPendingEventsiib+00001094
[ 63] 0x0000000108cbdd5f bin/maci64/libmwservices.dylib+01232223 _Z25svWS_ProcessPendingEventsiib+00000175
[ 64] 0x000000010fc91284 bin/maci64/libmwmcr.dylib+00189060 _ZN3mcr7runtime26InterpreterThreadSingleton4Impl14process_eventsERKN7mwboost10shared_ptrIS2_EE+00000356
[ 65] 0x000000010fc91957 bin/maci64/libmwmcr.dylib+00190807 _ZN3mcr7runtime26InterpreterThreadSingleton4Impl3runERKN7mwboost10shared_ptrIS2_EEPNS2_12init_contextE+00000279
[ 66] 0x000000010fc8cc1a bin/maci64/libmwmcr.dylib+00171034 _Z26run_init_and_handle_eventsPv+00000266
[ 67] 0x00007fff7b2672eb /usr/lib/system/libsystem_pthread.dylib+00013035 _pthread_body+00000126
[ 68] 0x00007fff7b26a249 /usr/lib/system/libsystem_pthread.dylib+00025161 _pthread_start+00000066
[ 69] 0x00007fff7b26640d /usr/lib/system/libsystem_pthread.dylib+00009229 thread_start+00000013
This error was detected while a MEX-file was running. If the MEX-file
is not an official MathWorks function, please examine its source code
for errors. Please consult the External Interfaces Guide for information
on debugging MEX-files.
Walter Roberson
Walter Roberson 2019-8-4
Is this something that happens just as a result of using mex(), or is it something that happens when you run code that has been compiled with mex?
It happens after the mex compiler finishes successfully the compilation. I guess since the compilation is successful and crashes later on, then it has to do with the .mexmaci64 file
Guillaume
Guillaume 2019-8-4
The crash is because of a bug in the code that was compiled as mex. The mex file tries to access some memory it's not allowed.
Walter Roberson
Walter Roberson 2019-8-4
For example if you compile the code and then quit MATLAB and then restart MATLAB and run code that uses the .mex* file, then do you still get the crash?
If you use mex to compile the file but do not run the .mex* file, then does the crash still appear?

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