Corinna Vinschen 948d40e482 Cygwin: return full sigset_t from sig_send
So far sig_send's return type is int.  The problem with this is
that sig_send returns a sigset_t on __SIGPENDING, and sigset_t
is defined as long type.  So the function only returns the lower
32 bit of sigset_t, which is fine on 32 bit, but casts away the
pending RT signals on 64 bit.

Fix this by changing the return type of sig_send to sigset_t, so
as not to narrow down the sigset when returning from handling
__SIGPENDING.  Make sure to cast correctly in all invocations
of sig_send.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-07-12 17:27:26 +02:00
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