Protect against race conditions: if the pid is not seen,
authorJarkko Hietaniemi <jhi@iki.fi>
Sun, 25 May 2003 18:36:17 +0000 (18:36 +0000)
committerJarkko Hietaniemi <jhi@iki.fi>
Sun, 25 May 2003 18:36:17 +0000 (18:36 +0000)
commit00c4b2c0ce2c4995f5fbe668570cff57bd4d2463
tree0687c6edab9309694566f420650dff369036e632
parenta3be20bfd91e483c4a78ac84c9c6d288ef728021
Protect against race conditions: if the pid is not seen,
neither will be the $0 change be seen (and vice versa).

p4raw-id: //depot/perl@19619
ext/threads/t/join.t