MATLAB: Adding C file into Matlab routine

cmexmex compiler

Hello,
I am wondering how to integrate a C file into a matlab routine. I know you have to use "mex" in the matlab code, i.e. "mex -O file.c" , and then I call the function. However, I think I need to add something at the beginning of my C file in order to use it with mex? From what I gather, I have to use a mexFunction.. The code seems to compile, but then Matlab crashes every time.
Code:
      void mexFunction(
          int nlhs, mxArray *plhs[],
          int nrhs, const mxArray *prhs[])
          {
          double px,py,pz,p1x,p1y,p1z,p2x,p2y,p2z;
          double bx,by,bz,a,MU,NU;
          double sxx,syy,szz,sxy,syz,sxz;
          px=mxGetScalar(prhs[0]);
          py=mxGetScalar(prhs[1]);
          pz=mxGetScalar(prhs[2]);
          p1x=mxGetScalar(prhs[3]);
          p1y=mxGetScalar(prhs[4]);
          p1z=mxGetScalar(prhs[5]);
          p2x=mxGetScalar(prhs[6]);
          p2y=mxGetScalar(prhs[7]);
          p2z=mxGetScalar(prhs[8]); 
          bx=mxGetScalar(prhs[9]);
          by=mxGetScalar(prhs[10]);
          bz=mxGetScalar(prhs[11]);
          a=mxGetScalar(prhs[12]);
          MU=mxGetScalar(prhs[13]);
          NU=mxGetScalar(prhs[14]);
          *mxGetPr(plhs[0])=sxx;
          *mxGetPr(plhs[1])=syy;
          *mxGetPr(plhs[2])=szz;
          *mxGetPr(plhs[3])=sxy;
          *mxGetPr(plhs[4])=syz;
          *mxGetPr(plhs[5])=sxz;
          }
      static void StressDueToSeg(double px, double py, double pz,
                          double p1x, double p1y, double p1z,
                          double p2x, double p2y, double p2z,
                          double bx, double by, double bz,
                          double a, double MU, double NU,
                          double *sxx, double *syy, double *szz,
                          double *sxy, double *syz, double *sxz)
      { .... stuff...
      *sxx = bla bla;
      *syy = bla bla;
      *szz = bla bla;
      *sxy = bla bla;
      *syz = bla bla;
      *sxz = bla bla;
      return;
      }
In verbose mode,
**************************************************************************
  Warning: Neither -compatibleArrayDims nor -largeArrayDims is selected. 
           Using -compatibleArrayDims. In the future, MATLAB will require
           the use of -largeArrayDims and remove the -compatibleArrayDims
           option. For more information, see:
           http://www.mathworks.com/help/techdoc/matlab_external/bsflnue-1.html
**************************************************************************
-> mexopts.sh sourced from directory (DIR = $PREF_DIR)
   FILE = /Users/Francesco/.matlab/R2012b/mexopts.sh
----------------------------------------------------------------
->    MATLAB                = /Applications/MATLAB_R2012b.app
->    CC                    = llvm-gcc-4.2
->    CC flags:
         CFLAGS             = -fno-common -no-cpp-precomp -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/ -mmacosx-version-min=10.5  -fexceptions
         CDEBUGFLAGS        = -g
         COPTIMFLAGS        = -O2 -DNDEBUG
         CLIBS              = -L/Applications/MATLAB_R2012b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
         arguments          =  -DMX_COMPAT_32
->    CXX                   = llvm-g++-4.2
->    CXX flags:
         CXXFLAGS           = -fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/ -mmacosx-version-min=10.5
         CXXDEBUGFLAGS      = -g
         CXXOPTIMFLAGS      = -O2 -DNDEBUG
         CXXLIBS            = -L/Applications/MATLAB_R2012b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
         arguments          =  -DMX_COMPAT_32
->    FC                    = gfortran
->    FC flags:
         FFLAGS             = -fexceptions -m64 -fbackslash
         FDEBUGFLAGS        = -g
         FOPTIMFLAGS        = -O
         FLIBS              = -L/Applications/MATLAB_R2012b.app/bin/maci64 -lmx -lmex -lmat -L -lgfortran -L -lgfortranbegin
         arguments          =  -DMX_COMPAT_32
->    LD                    = llvm-gcc-4.2
->    Link flags:
         LDFLAGS            = -Wl,-twolevel_namespace -undefined error -arch x86_64 -Wl,-syslibroot,/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/ -mmacosx-version-min=10.5 -bundle -Wl,-exported_symbols_list,/Applications/MATLAB_R2012b.app/extern/lib/maci64/mexFunction.map
         LDDEBUGFLAGS       = -g
         LDOPTIMFLAGS       = -O
         LDEXTENSION        = .mexmaci64
         arguments          = 
->    LDCXX                 = 
->    Link flags:
         LDCXXFLAGS         = 
         LDCXXDEBUGFLAGS    = 
         LDCXXOPTIMFLAGS    = 
         LDCXXEXTENSION     = 
         arguments          = 
----------------------------------------------------------------
-> llvm-gcc-4.2 -c  -I/Applications/MATLAB_R2012b.app/extern/include -I/Applications/MATLAB_R2012b.app/simulink/include -DMATLAB_MEX_FILE -fno-common -no-cpp-precomp -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/ -mmacosx-version-min=10.5  -fexceptions  -DMX_COMPAT_32 -O2 -DNDEBUG  "StressDueToSeg.c"
-> llvm-gcc-4.2 -O -Wl,-twolevel_namespace -undefined error -arch x86_64 -Wl,-syslibroot,/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/ -mmacosx-version-min=10.5 -bundle -Wl,-exported_symbols_list,/Applications/MATLAB_R2012b.app/extern/lib/maci64/mexFunction.map -o  "StressDueToSeg.mexmaci64"  StressDueToSeg.o  -L/Applications/MATLAB_R2012b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
The error log that I get when it crashes is:




MATLAB crash file:/Users/Francesco/matlab_crash_dump.919-1:




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


       Segmentation violation detected at Wed Apr 10 20:02:43 2013


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




Configuration:


  Crash Decoding  : Disabled


  Current Visual  : None


  Default Encoding: ISO-8859-1


  MATLAB Root     : /Applications/MATLAB_R2012b.app


  MATLAB Version  : 8.0.0.783 (R2012b)


  Operating System: Darwin 12.3.0 Darwin Kernel Version 12.3.0: Sun Jan  6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64 x86_64


  Processor ID    : x86 Family 6 Model 58 Stepping 9, GenuineIntel


  Virtual Machine : Java 1.6.0_43-b01-447-11M4203 with Apple Inc. Java HotSpot(TM) 64-Bit Server VM mixed mode


  Window System   : No active display




Fault Count: 1




Abnormal termination:


Segmentation violation




Register State (from fault):


  RAX = 0000000000000000  RBX = 0000000000000000


  RCX = 0000000000000000  RDX = 0000000000000000


  RSP = 637365636e617246  RBP = 2f73726573552f00


  RSI = 73657274532f6566  RDI = 666f795f64336464




     R8 = 0000000000000000   R9 = 0000000000000000


    R10 = 8000000000000000  R11 = 0000000000000000


    R12 = 00000001107f0a40  R13 = 000000010af6f000


    R14 = 00000001107f0a40  R15 = 000000010af6ff0b




    RIP = 0000000000000000  RFL = 0000000133b435d0




     CS = 00000001107f0a80   FS = 000000010550aeca   GS = 00000001107f0b70




Stack Trace (from fault):


[  0] 0x00000001000e4e46 /Applications/MATLAB_R2012b.app/bin/maci64/libmwfl.dylib+00036422 _ZN2fl4diag15stacktrace_base7captureERKNS0_14thread_contextEm+000150


[  1] 0x00000001000e5af1 /Applications/MATLAB_R2012b.app/bin/maci64/libmwfl.dylib+00039665 fl_diag_terminate+000321


[  2] 0x00000001000e7c34 /Applications/MATLAB_R2012b.app/bin/maci64/libmwfl.dylib+00048180 _ZN2fl4diag13terminate_logEPKcRKNS0_14thread_contextE+000100


[  3] 0x00000001008e125e /Applications/MATLAB_R2012b.app/bin/maci64/libmwmcr.dylib+00315998 mnTrapCtrlc+000254


[  4] 0x00000001008e2d24 /Applications/MATLAB_R2012b.app/bin/maci64/libmwmcr.dylib+00322852 _Z32mnRunPathDependentInitializationv+003492


[  5] 0x00000001008e313d /Applications/MATLAB_R2012b.app/bin/maci64/libmwmcr.dylib+00323901 _Z32mnRunPathDependentInitializationv+004541


[  6] 0x00000001008e37f5 /Applications/MATLAB_R2012b.app/bin/maci64/libmwmcr.dylib+00325621 _Z32mnRunPathDependentInitializationv+006261


[  7] 0x00000001008e3945 /Applications/MATLAB_R2012b.app/bin/maci64/libmwmcr.dylib+00325957 mnFatalSignalHandler+000149


[  8] 0x00007fff95ec094a                  /usr/lib/system/libsystem_c.dylib+00010570 _sigtramp+000026


[  9] 0x00000000fffffff5                  /usr/lib/system/libsystem_c.dylib+18446603342295867381


[ 10] 0x000000010af6ff0b /Users/Francesco/Documents/Dropbox/DPhil/MATLAB/dd3d_yoffe/StressDueToSeg.mexmaci64+00003851 mexFunction+000155


[ 11] 0x000000010550aeca /Applications/MATLAB_R2012b.app/bin/maci64/libmex.dylib+00065226 mexRunMexFile+000090


[ 12] 0x0000000105506a29 /Applications/MATLAB_R2012b.app/bin/maci64/libmex.dylib+00047657 _ZN7Mfh_mex30runMexFileWithSignalProtectionEiPP11mxArray_tagiS2_+000137


[ 13] 0x0000000105508038 /Applications/MATLAB_R2012b.app/bin/maci64/libmex.dylib+00053304 _ZN7Mfh_mex13dispatch_fileEiPP11mxArray_tagiS2_+000232


[ 14] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 15] 0x0000000100d8b5b2 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03278258 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000914


[ 16] 0x0000000100d9287f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679


[ 17] 0x0000000100d934e6 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598


[ 18] 0x0000000100bc9b4f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527


[ 19] 0x0000000100bf4b7e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286


[ 20] 0x0000000100bf4c3b /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091


[ 21] 0x0000000100d39f16 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654


[ 22] 0x0000000100b277d9 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00772057 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+001113


[ 23] 0x0000000100b9482a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530


[ 24] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 25] 0x0000000100d8b5b2 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03278258 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000914


[ 26] 0x0000000100d9287f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679


[ 27] 0x0000000100d934e6 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598


[ 28] 0x0000000100bc9b4f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527


[ 29] 0x0000000100bf4b7e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286


[ 30] 0x0000000100bf4c3b /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091


[ 31] 0x0000000100d39f16 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654


[ 32] 0x0000000100b277d9 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00772057 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+001113


[ 33] 0x0000000100b9482a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530


[ 34] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 35] 0x0000000100d8b5b2 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03278258 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000914


[ 36] 0x0000000100d9287f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679


[ 37] 0x0000000100d934e6 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598


[ 38] 0x0000000100bc9b4f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527


[ 39] 0x0000000100bf4b7e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286


[ 40] 0x0000000100bf4c3b /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091


[ 41] 0x0000000100d39f16 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654


[ 42] 0x0000000100b277d9 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00772057 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+001113


[ 43] 0x0000000100b9482a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530


[ 44] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 45] 0x0000000100d8b5b2 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03278258 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000914


[ 46] 0x0000000100d9287f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679


[ 47] 0x0000000100d934e6 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598


[ 48] 0x0000000100bc9b4f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527


[ 49] 0x0000000100bf4b7e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286


[ 50] 0x0000000100bf4c3b /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091


[ 51] 0x0000000100d39f16 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654


[ 52] 0x0000000100b24361 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00758625 _Z16inEnterDebugModeN5boost8functionIFvvEEEb+012273


[ 53] 0x0000000100b29c1c /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00781340 _Z18protected_inInterp12inDebugCheckii7opcodesPV15inPcodeNest_tagPl+000140


[ 54] 0x0000000100b2614e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00766286 _Z16inEnterDebugModeN5boost8functionIFvvEEEb+019934


[ 55] 0x0000000100b27630 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00771632 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+000688


[ 56] 0x0000000100b9482a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530


[ 57] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 58] 0x0000000100d8b5b2 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03278258 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000914


[ 59] 0x0000000100d9287f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679


[ 60] 0x0000000100d934e6 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598


[ 61] 0x0000000100bc9b4f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527


[ 62] 0x0000000100bf4b7e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286


[ 63] 0x0000000100bf4c3b /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091


[ 64] 0x0000000100d39f16 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654


[ 65] 0x0000000100b277d9 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00772057 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+001113


[ 66] 0x0000000100b9482a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530


[ 67] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 68] 0x0000000100d8b5b2 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03278258 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000914


[ 69] 0x0000000100d9287f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679


[ 70] 0x0000000100d934e6 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598


[ 71] 0x0000000100bc9b4f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527


[ 72] 0x0000000100bf4b7e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286


[ 73] 0x0000000100bf4c3b /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091


[ 74] 0x0000000100d39f16 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654


[ 75] 0x0000000100b277d9 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00772057 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+001113


[ 76] 0x0000000100b9482a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530


[ 77] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 78] 0x0000000100b5734d /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00967501 _ZN12InterpBridge7CallFcnEiPP11mxArray_tagiS2_PKc+000349


[ 79] 0x0000000100aab1af /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00262575 inFullFevalFcn+000111


[ 80] 0x00000001009a03b4 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00074676 _ZN11Mfh_builtin11dispatch_mfEiPP11mxArray_tagiS2_+000084


[ 81] 0x0000000100991e25 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00015909 _ZN13Mfh_MATLAB_fn11dispatch_fhEiPP11mxArray_tagiS2_+000501


[ 82] 0x0000000100d8b43d /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03277885 _ZN20ResolverFunctionDesc12CallFunctionEiPP11mxArray_tagiS2_+000541


[ 83] 0x0000000100d9287f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03307647 _ZN8Resolver13CallMFunctionEiiP10_m_operandP17m_operand_storageiS1_S3_Pi+001679


[ 84] 0x0000000100d934e6 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+03310822 _Z22inResolveMFunctionCallP16_m_function_desciiP10_m_operandP17m_operand_storageiS2_S4_PiP13inMarshalTypeiPK19mpsTypeSequenceNlhsPFP11mxArray_tagiE+000598


[ 85] 0x0000000100bc9b4f /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01436495 _ZN9accelImpl13MFunctionCallEPP8_accelOp+000527


[ 86] 0x0000000100bf4b7e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612670 _ZN9accelImpl4ExecEv+000286


[ 87] 0x0000000100bf4c3b /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01612859 _ZNK9accelCode4CallEP13inMarshalTypePi+000091


[ 88] 0x0000000100d39f16 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+02944790 _ZN5inJit17ExecuteHotSegmentEP15_inJitAccelInfoP7opcodesPiPl+001654


[ 89] 0x0000000100b24361 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00758625 _Z16inEnterDebugModeN5boost8functionIFvvEEEb+012273


[ 90] 0x0000000100b29c1c /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00781340 _Z18protected_inInterp12inDebugCheckii7opcodesPV15inPcodeNest_tagPl+000140


[ 91] 0x0000000100b2614e /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00766286 _Z16inEnterDebugModeN5boost8functionIFvvEEEb+019934


[ 92] 0x0000000100b27630 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+00771632 _Z26inExecuteMFunctionOrScriptP6Mfh_mpb+000688


[ 93] 0x0000000100b9482a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01218602 _Z10inRunMfileiPP11mxArray_tagiS1_P6Mfh_mpP15inWorkSpace_tag+001530


[ 94] 0x00000001009dab43 /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_dispatcher.dylib+00314179 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000499


[ 95] 0x0000000100b76a5a /Applications/MATLAB_R2012b.app/bin/maci64/libmwm_interpreter.dylib+01096282 _Z19inDispatchFromStackiPKcii+001034



            
            


    

        

	
    

        
Best Answer

    


    

								

								
The difference is that in your original code you did not create any variables in the plhs[0], plhs[1], etc spots before you tried to access them with these lines:
          *mxGetPr(plhs[0])=sxx;
          *mxGetPr(plhs[1])=syy;
          *mxGetPr(plhs[2])=szz;
          *mxGetPr(plhs[3])=sxy;
          *mxGetPr(plhs[4])=syz;
          *mxGetPr(plhs[5])=sxz;
So plhs[0] etc all contain invalid pointers at that point in your code, hence the crash.
In your newer posted code, the plhs[0] etc arrays are created prior to accessing them via this:
        for (i=0; i<nlhs; i++)  {
          plhs[i]=mxCreateDoubleMatrix(1,1,mxREAL);}
You don't show it, but I am assuming you have this necessary line at the top of your code?
#include "mex.h"

						    

						
		
    

        

    



        

        

            
            
            
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