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
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