Chet Ramey <chet.ra...@case.edu> writes: > On 3/31/12 9:19 AM, Lluís Batlle i Rossell wrote: >> Hello, >> >> I have this script, that I've found to never write "DONE" in my systems, with >> bash 4.0, 4.1, 4.2.. until 4.2-p20, my last test. >> >> However, in irc some people told me it prints DONE for them. If I run the >> script with >> bash under 'strace -f', it also prints DONE. > > It looks like a simple race condition. I suspect that the scheduler > arranges things so that the child process ends up exiting between the > open and the read, but I don't have any real evidence to back it up.
Note that the opening of the pipe as part of the redirection in the parent blocks until there is a writer, ie. until the child opens the pipe. Can this open call return EINTR? Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."
