* lib/xnanosleep.c (xnanosleep): Don't assume GCC 4.3.0 behavior

when avoiding problems with integer overflow.  Use a portable test
instead.

1 files changed, 7 insertions, 9 deletions

diff --git a/lib/xnanosleep.c b/lib/xnanosleep.c
index 22bd53a953..317e40ade5 100644
--- a/lib/xnanosleep.c
+++ b/lib/xnanosleep.c
@@ -72,15 +72,13 @@ xnanosleep (double seconds)
   /* Normalize the interval length.  nanosleep requires this.  */
   if (BILLION <= ts_sleep.tv_nsec)
     {
-      /* Declare "volatile" so that gcc-4.3.0 doesn't optimize away
-	 the overflow test.  */
-      volatile time_t t = ts_sleep.tv_sec + 1;
-
-      /* Detect integer overflow.  */
-      overflow |= (t < ts_sleep.tv_sec);
-
-      ts_sleep.tv_sec = t;
-      ts_sleep.tv_nsec -= BILLION;
+      if (ts_sleep.tv_sec == TIME_T_MAX)
+	overflow = true;
+      else
+	{
+	  ts_sleep.tv_sec++;
+	  ts_sleep.tv_nsec -= BILLION;
+	}
     }
 
   for (;;)