misc/sys/select.h (__FD_MASK): Avoid signed integer overflow.

Shifting into the sign position is currently supported as a GCC
extension, but explicitly subjected to future changes.  Computation
in the unsigned type followed by a cast to the signed type is a GCC
extension that will be available forever.

1 files changed, 5 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index caa89170d7..0071571bce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-02-25  Florian Weimer  <fweimer@redhat.com>
+
+	[BZ #15347]
+	* misc/sys/select.h (__FD_MASK): Avoid signed integer overflow.
+
 2014-02-25  Will Newton  <will.newton@linaro.org>
 
 	* sysdeps/arm/__longjmp.S: Include stap-probe.h.