Change Details

While waiting for input in the read builtin, if select() is interrupted but there is no pending signal, don't assume SIGALRM; just continue. Only fake a SIGALRM return if select() times out. While here, add a test case that verifies that `read -t 0` behaves correctly when input is available; we already have one that verifies that it does when there isn't. Finally, improve validation of the timeout value. PR: 290844 MFC after: 1 week

While waiting for input in the read builtin, if select() is interrupted but there is no pending signal, we act like we timed out, and return the same status as if we had been interrupted by SIGALRM, instead of looping until we actually do time out. * Improve validation of the timeout value. * Replace the single select() call with a ppoll() loop. * Add a test case that verifies that `read -t 0` behaves correctly when input is available; we already have one that verifies that it does when there isn't. PR: 290844 MFC after: 1 week

While waiting for input in the read builtin, if select() is interrupted but there is no pending signal, don't assume SIGALRM;we act like we timed out, just continue.and return the Only fake asame status as if we had been interrupted by SIGALRM return if select(), instead of looping until we actually do times out. While here, add* Improve validation of the timeout value. * Replace the single select() call with a ppoll() loop. * Add a test case that verifies that `read -t 0` behaves correctly when correctly when input is available; we already have one that verifies that it does that it does when there isn't. Finally, improve validation of the timeout valuet. PR: 290844 MFC after: 1 week