Manual merge from mysql-5.1-bugteam into mysql-5.5-bugteam.

conflicts:
   conflict      dbug/dbug.c
   conflict      sql/sql_load.cc

dbug/dbug.c

@@ -496,6 +496,7 @@ int DbugParse(CODE_STATE *cs, const char *control)
   rel= control[0] == '+' || control[0] == '-';
   if ((!rel || (!stack->out_file && !stack->next)))
   {
+    /* Free memory associated with the state before resetting its members */
     FreeState(cs, stack, 0);
     stack->flags= 0;
     stack->delay= 0;
@@ -1608,7 +1609,7 @@ static void PushState(CODE_STATE *cs)
   struct settings *new_malloc;
 
   new_malloc= (struct settings *) DbugMalloc(sizeof(struct settings));
-  bzero(new_malloc, sizeof(*new_malloc));
+  bzero(new_malloc, sizeof(struct settings));
   new_malloc->next= cs->stack;
   cs->stack= new_malloc;
 }
@@ -2088,7 +2089,7 @@ static FILE *OpenProfile(CODE_STATE *cs, const char *name)
 
 static void DBUGCloseFile(CODE_STATE *cs, FILE *fp)
 {
-  if (fp && fp != stderr && fp != stdout && fclose(fp) == EOF)
+  if (fp != NULL && fp != stderr && fp != stdout && fclose(fp) == EOF)
   {
     pthread_mutex_lock(&THR_LOCK_dbug);
     (void) fprintf(cs->stack->out_file, ERR_CLOSE, cs->process);

mysql-test/r/partition_error.result

@@ -1196,4 +1196,14 @@ PARTITION p VALUES LESS THAN (1219089600),
 PARTITION pmax VALUES LESS THAN MAXVALUE);
 ERROR HY000: Constant, random or timezone-dependent expressions in (sub)partitioning function are not allowed
 DROP TABLE old;
+#
+# Bug #56709: Memory leaks at running the 5.1 test suite
+# 
+CREATE TABLE t1 (a TIMESTAMP NOT NULL PRIMARY KEY);
+ALTER TABLE t1
+PARTITION BY RANGE (EXTRACT(DAY FROM a)) (
+PARTITION p VALUES LESS THAN (18),
+PARTITION pmax VALUES LESS THAN MAXVALUE);
+ERROR HY000: Constant, random or timezone-dependent expressions in (sub)partitioning function are not allowed
+DROP TABLE t1;
 End of 5.1 tests

mysql-test/r/variables_debug.result

@@ -31,6 +31,19 @@ SELECT @@global.debug;
 @@global.debug
 
 SET GLOBAL debug=@old_debug;
+#
+# Bug #56709: Memory leaks at running the 5.1 test suite
+# 
+SET @old_local_debug = @@debug;
+SET @@debug='d,foo';
+SELECT @@debug;
+@@debug
+d,foo
+SET @@debug='';
+SELECT @@debug;
+@@debug
+
+SET @@debug = @old_local_debug;
 End of 5.1 tests
 #
 # Bug#46165 server crash in dbug

mysql-test/t/partition_error.test

@@ -1381,4 +1381,18 @@ PARTITION pmax VALUES LESS THAN MAXVALUE);
 
 DROP TABLE old;
 
+--echo #
+--echo # Bug #56709: Memory leaks at running the 5.1 test suite
+--echo # 
+
+CREATE TABLE t1 (a TIMESTAMP NOT NULL PRIMARY KEY);
+
+--error ER_WRONG_EXPR_IN_PARTITION_FUNC_ERROR
+ALTER TABLE t1
+PARTITION BY RANGE (EXTRACT(DAY FROM a)) (
+PARTITION p VALUES LESS THAN (18),
+PARTITION pmax VALUES LESS THAN MAXVALUE);
+
+DROP TABLE t1;
+
 --echo End of 5.1 tests

mysql-test/t/variables_debug.test

@@ -35,6 +35,19 @@ SELECT @@global.debug;
 
 SET GLOBAL debug=@old_debug;
 
+--echo #
+--echo # Bug #56709: Memory leaks at running the 5.1 test suite
+--echo # 
+
+SET @old_local_debug = @@debug;
+
+SET @@debug='d,foo';
+SELECT @@debug;
+SET @@debug='';
+SELECT @@debug;
+
+SET @@debug = @old_local_debug;
+
 --echo End of 5.1 tests
 
 

sql/item_timefunc.cc

@@ -2338,8 +2338,6 @@ void Item_extract::print(String *str, enum_query_type query_type)
 
 void Item_extract::fix_length_and_dec()
 {
-  value.alloc(32);				// alloc buffer
-
   maybe_null=1;					// If wrong date
   switch (int_type) {
   case INTERVAL_YEAR:		max_length=4; date_value=1; break;
@@ -2382,6 +2380,8 @@ longlong Item_extract::val_int()
   }
   else
   {
+    char buf[40];
+    String value(buf, sizeof(buf), &my_charset_bin);;
     String *res= args[0]->val_str(&value);
     if (!res ||
         str_to_time_with_warn(res->charset(), res->ptr(), res->length(),

sql/item_timefunc.h

@@ -733,7 +733,6 @@ public:
 
 class Item_extract :public Item_int_func
 {
-  String value;
   bool date_value;
  public:
   const interval_type int_type; // keep it public

sql/sql_load.cc

@@ -1345,6 +1345,7 @@ READ_INFO::READ_INFO(File file_par, uint tot_length, CHARSET_INFO *cs,
 		      MYF(MY_WME)))
     {
       my_free(buffer); /* purecov: inspected */
+      buffer= NULL;
       error=1;
     }
     else
@@ -1371,13 +1372,11 @@ READ_INFO::READ_INFO(File file_par, uint tot_length, CHARSET_INFO *cs,
 
 READ_INFO::~READ_INFO()
 {
-  if (!error)
-  {
-    if (need_end_io_cache)
-      ::end_io_cache(&cache);
+  if (!error && need_end_io_cache)
+    ::end_io_cache(&cache);
+
+  if (buffer != NULL)
     my_free(buffer);
-    error=1;
-  }
   List_iterator<XML_TAG> xmlit(taglist);
   XML_TAG *t;
   while ((t= xmlit++))