* eval.c (rb_fd_isset): compare the result of FD_ISSET with 0 to

  avoid BSD bug.  BSD defines FD_ISSET as just a bitmap of unsigned
  long.  So returning the value from rb_fd_isset discards upper
  32bits on LP64 environment.
  http://www.freebsd.org/cgi/query-pr.cgi?pr=ia64/91421


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9802 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/eval.c b/eval.c
index 61f38e56f9..4705e06d25 100644
--- a/eval.c
+++ b/eval.c
@@ -9644,7 +9644,7 @@ rb_fd_isset(n, fds)
     const rb_fdset_t *fds;
 {
     if (n >= fds->maxfd) return 0;
-    return FD_ISSET(n, fds->fdset);
+    return FD_ISSET(n, fds->fdset) != 0; /* "!= 0" avoids BSD bug */
 }
 
 void