* enh: > POSIX removed ESRCH years ago. > > In resolving http://austingroupbugs.net/view.php?id=1214 it was made > clear that callers can't rely on using signal 0 to test for the > continued existence of a thread. Update the man page to make it clearer > that this doesn't generally work (even if it sometimes seems to). > > See also the long explanation of why this is the case (and how to fix > your code) here: > > https://android.googlesource.com/platform/bionic/+/master/docs/status.md#invalid-handling-targetsdkversion-o Well, if you fix the thread exit race (like musl did, and glibc should as well, see bug 12889), you could get a reliable ESRCH as a side effect. Pity that POSIX doesn't allow that. I think this might be a case where common (but not unavoidable) implementation problems get in the way of a better standard. Usually, it's the other way round.
