marcel 691f012913 Fix FD_ISSET() on LP64 platforms. The FD_ISSET() function/macro is
defined to return an int, but on LP64 platforms the return value of
FD_ISSET() for file descriptors with a bit-index larger than 31 would
not fit an int (due to __fd_mask being defined as an unsigned long).
The fix is to explicitly test against 0.

PR: ia64/91421
Submitted by: Tanaka Akira (akr at m17n dot org)
MFC after: 1 week
2006-01-06 22:12:46 +00:00
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