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bug #25492 (Invalid deallocation in mysql_stmt_fetch)

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holyfoot/hf@mysql.com/hfmain.(none) 2007-02-13 00:55:45 +04:00
parent e3f4f02b64
commit 0004fa3c5b
1 changed files with 26 additions and 6 deletions
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32
libmysqld/lib_sql.cc
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@ -66,6 +66,16 @@ void embedded_get_error(MYSQL *mysql)
}
}
static void emb_free_rows(THD *thd)
{
if (thd->current_stmt)
free_root(&thd->data->alloc,MYF(0));
else
free_rows(thd->data);
}
static my_bool
emb_advanced_command(MYSQL *mysql, enum enum_server_command command,
const char *header, ulong header_length,
@ -78,7 +88,7 @@ emb_advanced_command(MYSQL *mysql, enum enum_server_command command,
if (thd->data)
{
free_rows(thd->data);
emb_free_rows(thd);
thd->data= 0;
}
/* Check that we are calling the client functions in right order */
@ -248,13 +258,23 @@ static int emb_stmt_execute(MYSQL_STMT *stmt)
int emb_read_binary_rows(MYSQL_STMT *stmt)
{
MYSQL_DATA *data;
if (!(data= emb_read_rows(stmt->mysql, 0, 0)))
MYSQL *mysql= stmt->mysql;
embedded_get_error(mysql);
if (mysql->net.last_errno)
{
set_stmt_errmsg(stmt, stmt->mysql->net.last_error,
stmt->mysql->net.last_errno, stmt->mysql->net.sqlstate);
set_stmt_errmsg(stmt, mysql->net.last_error,
mysql->net.last_errno, mysql->net.sqlstate);
return 1;
}
if (((THD*)mysql->thd)->data)
{
DBUG_ASSERT(((THD*) mysql->thd)->data == &stmt->result);
stmt->result.prev_ptr= NULL;
((THD*)mysql->thd)->data= NULL;
}
else
stmt->result.rows= 0;
return 0;
}
@ -285,7 +305,7 @@ static void emb_free_embedded_thd(MYSQL *mysql)
{
THD *thd= (THD*)mysql->thd;
if (thd->data)
free_rows(thd->data);
emb_free_rows(thd);
thread_count--;
delete thd;
mysql->thd=0;