--- runtime/Clib/cdate.c.orig
+++ runtime/Clib/cdate.c
@@ -22,7 +22,7 @@
    date = GC_MALLOC_ATOMIC( BGL_DATE_SIZE );
    date->date_t.header = MAKE_HEADER( DATE_TYPE, 0 );
 
-   date->date_t.timezone = timezone;
+   date->date_t.timezone = tm->tm_gmtoff;
       
    date->date_t.sec = tm->tm_sec;
    date->date_t.min = tm->tm_min;
@@ -46,7 +46,7 @@
 BGL_RUNTIME_DEF
 obj_t
 bgl_seconds_to_date( long sec ) {
-   return tm_to_date( localtime( (time_t *)&sec ), &sec );
+   return tm_to_date( localtime( (time_t *)&sec ), (time_t *)&sec );
 }
 
 /*---------------------------------------------------------------------*/
@@ -115,7 +115,7 @@
    struct tm *t;
    char *s;
 
-   t = gmtime( &((time_t)sec) );
+   t = gmtime( (time_t *)&sec );
    s = asctime( t );
 
    return string_to_bstring_len( s, (int)strlen( s ) - 1 );