Package: glibc-doc
Version: 2.7-18
Severity: normal
The pthread_cancel manpage, under bugs, recommends the following code as a
workaround
for syscalls not being cancellation points:
pthread_testcancel();
retcode = read(fd, buffer, length);
pthread_testcancel();
However, this code is inherently racy (when the signal arrives after the
first pthread_testcancel and before the read, the thread will simply hang
in read).
This should either be documented, or a really working workaround should be
given.
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