Fix memory leak when using justify_hours.

doc/src/sgml/func.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.282 2005/08/24 20:49:35 tgl Exp $
+$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.283 2005/08/25 01:29:55 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -5188,6 +5188,12 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
      </tgroup>
     </table>
 
+   <para>
+    If you are using both <function>justify_hours</> and <function>justify_days</>,
+    it is best to use <function>justify_hours</> first so any additional days will
+    justified by <function>justify_days</>.
+   </para>
+
    <para>
     In addition to these functions, the SQL <literal>OVERLAPS</> operator is
     supported:

src/backend/utils/adt/timestamp.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.148 2005/08/12 18:23:54 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.149 2005/08/25 01:30:06 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1892,7 +1892,7 @@ timestamp_mi(PG_FUNCTION_ARGS)
 {
 	Timestamp	dt1 = PG_GETARG_TIMESTAMP(0);
 	Timestamp	dt2 = PG_GETARG_TIMESTAMP(1);
-	Interval   *result;
+	Interval   *result, *result2;
 
 	result = (Interval *) palloc(sizeof(Interval));
 
@@ -1914,9 +1914,10 @@ timestamp_mi(PG_FUNCTION_ARGS)
 	result->month = 0;
 	result->day = 0;
 
-	result = DatumGetIntervalP(DirectFunctionCall1(interval_justify_hours,
+	result2 = DatumGetIntervalP(DirectFunctionCall1(interval_justify_hours,
 												IntervalPGetDatum(result)));
-	PG_RETURN_INTERVAL_P(result);
+	pfree(result);
+	PG_RETURN_INTERVAL_P(result2);
 }
 
 /*	interval_justify_hours()
@@ -2263,7 +2264,7 @@ interval_mul(PG_FUNCTION_ARGS)
 	Interval   *span = PG_GETARG_INTERVAL_P(0);
 	float8		factor = PG_GETARG_FLOAT8(1);
 	double		month_remainder, day_remainder;
-	Interval   *result;
+	Interval   *result, *result2;
 
 	result = (Interval *) palloc(sizeof(Interval));
 
@@ -2289,9 +2290,10 @@ interval_mul(PG_FUNCTION_ARGS)
 					day_remainder * SECS_PER_DAY);
 #endif
 
-	result = DatumGetIntervalP(DirectFunctionCall1(interval_justify_hours,
+	result2 = DatumGetIntervalP(DirectFunctionCall1(interval_justify_hours,
 												IntervalPGetDatum(result)));
-	PG_RETURN_INTERVAL_P(result);
+	pfree(result);
+	PG_RETURN_INTERVAL_P(result2);
 }
 
 Datum
@@ -2310,7 +2312,7 @@ interval_div(PG_FUNCTION_ARGS)
 	Interval   *span = PG_GETARG_INTERVAL_P(0);
 	float8		factor = PG_GETARG_FLOAT8(1);
 	double		month_remainder, day_remainder;
-	Interval   *result;
+	Interval   *result, *result2;
 
 	result = (Interval *) palloc(sizeof(Interval));
 
@@ -2341,9 +2343,10 @@ interval_div(PG_FUNCTION_ARGS)
 	result->time = JROUND(result->time);
 #endif
 
-	result = DatumGetIntervalP(DirectFunctionCall1(interval_justify_hours,
+	result2 = DatumGetIntervalP(DirectFunctionCall1(interval_justify_hours,
 												IntervalPGetDatum(result)));
-	PG_RETURN_INTERVAL_P(result);
+	pfree(result);
+	PG_RETURN_INTERVAL_P(result2);
 }
 
 /*