id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
4533,timespec translation fails for times before 1970,Philipp Huber <phu@…>,viboes,"I had a target system that had always a failed assertion with a call to condition_variable::timed_wait();

I found out, that pthread_cond_timedwait does not accept a timespec argument that has negative tv_nsec.

Therefore I suggest the following patch, which works for me.

===================================================================
--- /boost/boost_1_43_0/boost/thread/pthread/timespec.hpp	(revision 1769)
+++ /boost/boost_1_43_0/boost/thread/pthread/timespec.hpp	(working copy)
@@ -26,6 +26,13 @@
             
             timeout.tv_sec=time_since_epoch.total_seconds();
             timeout.tv_nsec=(long)(time_since_epoch.fractional_seconds()*(1000000000l/time_since_epoch.ticks_per_second()));
+
+            if(timeout.tv_nsec < 0L)
+            {
+				timeout.tv_sec -= 1L;
+				timeout.tv_nsec += 1000000000L;
+            }
+
             return timeout;
         }
     }
",Support Requests,closed,To Be Determined,thread,Boost 1.43.0,Problem,worksforme,absolute time,viboes