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

Uwe Ligges ligges at statistik.uni-dortmund.de
Wed Feb 11 14:11:20 CET 2004

Steve Roberts wrote:

> 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?

Duncan Murdoch has collected some notes on different compiler issues on 
Windows (don't know whether Salford FTN95 is among them). Nevertheless, 
it is recommended to use the MinGW port of the gcc compiler with R.

Uwe Ligges

> 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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