> > Does anybody know a siutable debugging tool for 'malloc' - errors ??? > (especially for DIGITAL Unix...) > I'm not sure about Digital Unix, but ElectricFence is available for most Unix platforms. Do a web search for efence or ElectricFence. It places a write-protected page before and after each malloc'ed entity, so you get a segmentation fault immediately when you overwrite array bounds, and any debugger will show you the offending statement. This being a Fortran list, I would assume that on Unix, internally the Fortran and C compilers use the same malloc, so it probably works for Fortran allocate as well. HTH, Herbert %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%