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[Bug nptl/12683] Race conditions in pthread cancellation


http://sourceware.org/bugzilla/show_bug.cgi?id=12683

--- Comment #1 from Rich Felker <bugdal at aerifal dot cx> 2011-04-18 22:34:44 UTC ---
Created attachment 5677
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5677
Demonstration of problem 2

This program should hang, or possibly print x=0 if scheduling is really wacky.
If it exits printing a nonzero value of the volatile variable x, this means the
signal handler wrongly executed under asynchronous cancellation.

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