From: brarcher <brarcher@64e312b2-a51f-0410-8e61-82d0ca0eb02a>
Date: Tue, 1 Oct 2013 22:21:08 +0000 (+0000)
Subject: If clocks are not defined, set to (hopefully) invalid value
X-Git-Tag: 0.10.0~395
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f8aea7f052b5b9e77ed128bcfa5781fc77f42a25;p=check

If clocks are not defined, set to (hopefully) invalid value

Likely, if clock_gettime() is implemented on a system, the first
valid clock will be set to '0'. If not all clock are defined,
by setting our fake definitions to '0', we may accidental use a
valid clock when we did not mean to. Setting the clocks to '-1'
in hopes to avoid this.

git-svn-id: svn+ssh://svn.code.sf.net/p/check/code/trunk@819 64e312b2-a51f-0410-8e61-82d0ca0eb02a
---

diff --git a/lib/libcompat.h b/lib/libcompat.h
index 0848f67..57c43ab 100644
--- a/lib/libcompat.h
+++ b/lib/libcompat.h
@@ -123,12 +123,17 @@ int unsetenv (const char *name);
  * be available. These should define which type of clock
  * clock_gettime() should use. We define it here if it is
  * not defined simply so the reimplementation can ignore it.
+ *
+ * We set the values of these clocks to some (hopefully)
+ * invalid value, to avoid the case where we define a
+ * clock with a valid value, and unintentionally use
+ * an actual good clock by accident.
  */
 #ifndef CLOCK_MONOTONIC
-#define CLOCK_MONOTONIC 0
+#define CLOCK_MONOTONIC -1
 #endif
 #ifndef CLOCK_REALTIME
-#define CLOCK_REALTIME 0
+#define CLOCK_REALTIME -1
 #endif
 
 #ifndef HAVE_LIBRT