do print ("READ START",x) ; res <- readFile x ; print ("READ STOP",x) ; return res
Unless you've defined your own version of 'readFile', to mean read entire file now, the first 'print' is optimistic and the second 'print' is a lie. Claus
do print ("WRITE START",x); writeFile x src ; print ("WRITE STOP",x)
I then get on the console:
WRITE START foo WRITE STOP foo READ START foo openFile doesn't have permission to open foo.
The writeFile/readFile are happening in different threads, and they usually succeed - but not always. The bug seems to go away when I add performGC just after writeFile. My guess is that something in the openFile/hClose pair isn't really closed until a garbage collection happens. All this is using GHC 6.10.2 on XP through Cygwin.
I'm happy to supply more details if you can think of anything that will help,
Thanks
Neil _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users