c - Are data passed to mex functions guaranteed non-aliasing? -

suppose mex function called way

ret = amexfunction(foo, foo); % same data both inputs 

and in mex function:

void mexfunction( int nlhs, mxarray *plhs[],                   int nrhs, const mxarray *prhs[])  {     bar(mxgetdata(prhs[0]), mxgetdata(prhs[1])); } 

but bar defined as:

bar(type *restrict ptr1, type *restrict ptr2) {         ^^^^^^^^             ^^^^^^^^   // problem?     dosomething(); } 

you need restricted pointers when pointers not const, when 1 written aliasing become issue. inputs mex functions const, , constness should passed on calling functions. input data arrays not guaranteed point unaliased memory locations, because matlab assumes inputs won't changed, shouldn't be.