From: Jens Axboe <axboe@fb.com>
Date: Fri, 16 Sep 2016 16:08:15 +0000 (-0600)
Subject: configure: harden clockid_t test
X-Git-Tag: fio-2.14~1
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=a214d131483c58ab9f1456edaafc1eb8caa8711c

configure: harden clockid_t test

Don't assume we can assign '0' to a clockid_t type, let's just
memset it to be on the safe side.

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/configure b/configure
index 14ec47e9..a24e3eff 100755
--- a/configure
+++ b/configure
@@ -798,10 +798,12 @@ echo "CLOCK_MONOTONIC_PRECISE       $clock_monotonic_precise"
 clockid_t="no"
 cat > $TMPC << EOF
 #include <stdio.h>
+#include <string.h>
 #include <time.h>
 int main(int argc, char **argv)
 {
-  clockid_t cid = 0;
+  clockid_t cid;
+  memset(&cid, 0, sizeof(cid));
   return clock_gettime(cid, NULL);
 }
 EOF