diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index b7d62cd9ca..a22cc4f0c9 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,7 @@
+2005-02-21  Jim Blandy  <jimb@redhat.com>
+
+	* callback.c (os_fstat): Don't declare 't' unless it's used.
+
 2005-02-09  Jim Blandy  <jimb@redhat.com>
 
 	* Make-common.in (CGEN): Load guile.scm, and include a trailing
diff --git a/sim/common/callback.c b/sim/common/callback.c
index 6e789a2674..512590de5f 100644
--- a/sim/common/callback.c
+++ b/sim/common/callback.c
@@ -534,7 +534,9 @@ os_fstat (p, fd, buf)
 
   if (p->ispipe[fd])
     {
+#if defined (HAVE_STRUCT_STAT_ST_ATIME) || defined (HAVE_STRUCT_STAT_ST_CTIME) || defined (HAVE_STRUCT_STAT_ST_MTIME)
       time_t t = (*p->time) (p, NULL);
+#endif
 
       /* We have to fake the struct stat contents, since the pipe is
 	 made up in the simulator.  */