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[Bug stdio/21004] fread/fwrite does not handle EINTR correctly


https://sourceware.org/bugzilla/show_bug.cgi?id=21004

--- Comment #5 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Florian Weimer from comment #4)
> (In reply to Bernd Edlinger from comment #3)
> > What exactly would break by retrying EINTR
> > that is not already broken?
> 
> Code which uses EINTR to exit a blocked fread, with a signal handler which
> sets a global variable checked by the caller of fread.

but this is always a race condition, if the signal does
not interrupt a system call.  Are there really programs
that do that kind of programming?

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