diff --git a/include/my_global.h b/include/my_global.h
index f6200830ee3..07d4d8dc1cc 100644
--- a/include/my_global.h
+++ b/include/my_global.h
@@ -370,6 +370,12 @@ int	__void__;
 #define LINT_INIT(var)
 #endif
 
+#if defined(_lint) || defined(FORCE_INIT_OF_VARS) || defined(HAVE_purify)
+#define PURIFY_OR_LINT_INIT(var) var=0
+#else
+#define PURIFY_OR_LINT_INIT(var)
+#endif
+
 /* Define some useful general macros */
 #if defined(__cplusplus) && defined(__GNUC__)
 #define max(a, b)	((a) >? (b))
diff --git a/sql/item_timefunc.cc b/sql/item_timefunc.cc
index 41418c0094d..d8142352e70 100644
--- a/sql/item_timefunc.cc
+++ b/sql/item_timefunc.cc
@@ -161,21 +161,24 @@ static bool extract_date_time(DATE_TIME_FORMAT *format,
 {
   int weekday= 0, yearday= 0, daypart= 0;
   int week_number= -1;
-  CHARSET_INFO *cs= &my_charset_bin;
   int error= 0;
-  bool usa_time= 0;
-  bool sunday_first_n_first_week_non_iso= -2;
-  bool strict_week_number;
   int  strict_week_number_year= -1;
-  bool strict_week_number_year_type= -1;
   int frac_part;
+  bool usa_time= 0;
+  bool sunday_first_n_first_week_non_iso;
+  bool strict_week_number;
+  bool strict_week_number_year_type;
   const char *val_begin= val;
   const char *val_end= val + length;
   const char *ptr= format->format.str;
   const char *end= ptr + format->format.length;
+  CHARSET_INFO *cs= &my_charset_bin;
   DBUG_ENTER("extract_date_time");
 
   LINT_INIT(strict_week_number);
+  /* Remove valgrind varnings when using gcc 3.3 and -O1 */
+  PURIFY_OR_LINT_INIT(strict_week_number_year_type);
+  PURIFY_OR_LINT_INIT(sunday_first_n_first_week_non_iso);
 
   if (!sub_pattern_end)
     bzero((char*) l_time, sizeof(*l_time));