Re: [Mingw-users] MinGW C DLL corrupting Borland C++ app?

[James S. <jam...@op...>]

On Mon, 2007-01-22 at 18:19 -0800, Brian Dessent wrote:
> James Steward wrote:
> 
> > The next line of code in the C++ app uses snprintf to write to the
> > Strbuffer.
> > 
> > After execution of this line err has a value 1023.  Curious that this is
> > the size of the buffer passed to snprintf.
> > 
> > The next line of C++ calls a function to put that string buffer into a
> > GUI text box.  After that function err is complete garbage.
> 
> This sounds like the classic mismatch of calling conventions
> (cdecl/stdcall).  Make sure both compilers are under the same
> expectations, otherwise you get random stack corruption and crashes. 
> Remember that sometimes changing the calling convention also changes the
> function name decoration, so you may need to use a .def file to provide
> function aliases for linking to succeed.

Thanks Brian.  I feel like a dill.  I should have known better.

Cheers,
James.