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| author | marcel <marcel@FreeBSD.org> | 2006-01-06 22:12:46 +0000 |
|---|---|---|
| committer | marcel <marcel@FreeBSD.org> | 2006-01-06 22:12:46 +0000 |
| commit | 691f012913351f4b70e5cada5223ee00906b4baa (patch) | |
| tree | 3b56c123c505d246c296fca4bb6da880d61b4c18 | |
| parent | 33031923ec16ec9aa454446377691c53a956c474 (diff) | |
| download | FreeBSD-src-691f012913351f4b70e5cada5223ee00906b4baa.zip FreeBSD-src-691f012913351f4b70e5cada5223ee00906b4baa.tar.gz | |
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
| -rw-r--r-- | sys/sys/select.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/sys/select.h b/sys/sys/select.h index 342a849..511895b 100644 --- a/sys/sys/select.h +++ b/sys/sys/select.h @@ -80,7 +80,7 @@ typedef struct fd_set { #if __BSD_VISIBLE #define FD_COPY(f, t) (void)(*(t) = *(f)) #endif -#define FD_ISSET(n, p) ((p)->__fds_bits[(n)/_NFDBITS] & __fdset_mask(n)) +#define FD_ISSET(n, p) (((p)->__fds_bits[(n)/_NFDBITS] & __fdset_mask(n)) != 0) #define FD_SET(n, p) ((p)->__fds_bits[(n)/_NFDBITS] |= __fdset_mask(n)) #define FD_ZERO(p) do { \ fd_set *_p; \ |
