return; can cause Matlab to crash

I am working on a 64-bit Matlab with a few simple lines of codes taking in input values and outputting the result. The code works perfectly on a 32-bit Matlab but cause 64-bit Matlab to crash. I tried deleting the last line of mexFunction "return;" and the code works perfectly with 64-bit Matlab too.

Although I've already found the solution, but I would still love to know why return; can cause Matlab to crash.

[Ken Atwell]

That does seem odd -- make may you think to try removing the return?

Can you provide fuller reproduction information:

1) Compiler you are building your MEX files with

2) Version of MATLAB (R2012a, ...) and platform (Windows 7, ...) you are using

3) The simplest possible MEX Source file that demonstrates the problem

[Jane Jean]

Thank u for the reply. I think that you are right. return; can't cause crash.

I have rechecked my code and found a mxMalloc error. After correcting the error, the code worked perfectly, with or without return;