Improve detection of `fdatasync(2)` (re #11137)
authorHerbert Valerio Riedel <hvr@gnu.org>
Wed, 16 Dec 2015 16:40:48 +0000 (17:40 +0100)
committerHerbert Valerio Riedel <hvr@gnu.org>
Wed, 16 Dec 2015 16:40:48 +0000 (17:40 +0100)
This updates the `unix` submodule to pull in an improved
Autoconf test for `fdatasync(2)` in cases where `<unistd.h>` lacks
a declaration, but linking against `fdatasync` works which led to a
false positive previously.

libraries/unix

index 59edb0a..5d5b747 160000 (submodule)
@@ -1 +1 @@
-Subproject commit 59edb0a0a0d91ecfe938029b3b00a0c99dcb8481
+Subproject commit 5d5b74716b696b0f22c37a88ccc5c114b13f0398