Dear SL Users, I have a (perhaps stupid) question. Some time ago I switched to SL 5.0 (from various SuSE distributions). Now I've run into a problem with the compatibility of g77. On our workstations we have SuSE (guess who's the sys admin ;-)) with gcc version 3.3.5 20050117 (prerelease) (SUSE Linux) On my laptop and on other machines in our institute, I have SL with gcc version 3.4.6 20060404 (Red Hat 3.4.6-3) In 99.9% of all cases there is no problem with my (rather simple) codes. I can compile them without trouble. Only when I do some (either very simple) I/O, an incompatibility occurs. It happens if I write to a file and then read in the same file again within the same program. This worked without trouble in the older gcc version, but creates weird run-time errors in the new version: invalid number: incomprehensible list input apparent state: unit 1 named RW-total-tadmix4pi-6pi-om-phi-DY.dat last format: list io lately reading sequential formatted external IO Aborted Here, "RW-total-tadmix4pi-6pi-om-phi-DY.dat" is the file I write to disk and then read it in again. Of course it's not a big deal to rewrite the code that this is re-reading not necessary. But, if someone knows a compiler switch or the like so that the writing out and reading in of a file in the same program works again, it would save me some time. Cheers, Hendrik. -- Hendrik van Hees Texas A&M University Phone: +1 979/845-1411 Cyclotron Institute, MS-3366 Fax: +1 979/845-1899 College Station, TX 77843-3366 http://cyclotron.tamu.edu/hees/ mailto:[log in to unmask]