[Bug libc/16364] New: sleep may leave SIGCHLD blocked on sync cancellation on GNU/Linux

["aoliva at sourceware dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16364

            Bug ID: 16364
           Summary: sleep may leave SIGCHLD blocked on sync cancellation
                    on GNU/Linux
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: aoliva at sourceware dot org
                CC: drepper.fsp at gmail dot com

sleep calls nanosleep after blocking SIGCHLD on GNU/Linux.  nanosleep is a
cancellation point, and so is sleep, but there isn't any cleanup in sleep to
restore SIGCHLD to its original state should the nanosleep syscall be
cancelled.

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