[R] RGui (Windows) crashes after use of a Salford Fortran DLL

[Liaw, Andy]

My suggestion would be to make sure that your code works with the
recommended compilers, and that the problem is not in your code.  (This is
harder than you might think:  I recently found a bug in a Fortran subroutine
that crashes R _only_ if I use the latest GCC _and_ turn on optimization.)

Andy

> From: Steve Roberts
> 
> Anybody out there successfully using the Salford Fortran compilers 
> with R? 
> 
> I have created a DLL using the Salford FTN95 compiler and it works 
> in as far I can dyn.load it, run the routines and get the  right 
> answers back. Unfortunately subsequently, sometime later, the 
> Rgui crashes (access violation I think from the DrWatson log). The 
> crashes depend on whether or not I paste the code as one big 
> chunk, or as little chunks, and sometimes I can do a few things 
> before it crashes and other times not - but if I do exactly the same 
> things the crashes are reproducible. The crashes are sometimes in 
> the DLL and sometimes in pure R code. R1.7.1 and 1.8.1 seem to 
> behave identically. Windows 2000 Pro.
> 
> I do get the dyn.load warning about the DLL changing the FPU 
> control word.
> 
> Does this ring any bells with anyone?
> 
> Steve.
> 
>   Dr Steve Roberts 
>   steve.roberts at man.ac.uk
> 
> Senior Lecturer in Medical Statistics,
> CMMCH NHS Trust and University of Manchester Biostatistics Group,
> 0161 275 5192 / 0161 276 5785
> 
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