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Fix bug #13424 locking view with query cache enabled crashes server

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For LOCK view is opened but not prepared thus leaving 'table' field set to
NULL. invalidate_locked_for_write() wasn't checking that and call to 
invalidate_table(NULL) crashes server.

To invalidate_locked_for_write() added check that ensures that table is
completely opened.


sql/sql_cache.cc:
  Fix bug #13424 locking view with query cache enabled crashes server
  Added check that table is completely opened.
mysql-test/t/view_query_cache.test:
  Test case for bug#13424 locking view with query cache enabled crashes server
mysql-test/r/view_query_cache.result:
  Test case for bug#13424 locking view with query cache enabled crashes server
This commit is contained in:
unknown
2005-09-26 19:08:26 +04:00
parent 6f126ba4d0
commit 05c17f2abc
3 changed files with 23 additions and 1 deletions
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3
sql/sql_cache.cc
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@@ -1295,7 +1295,8 @@ void Query_cache::invalidate_locked_for_write(TABLE_LIST *tables_used)
DUMP(this);
for (; tables_used; tables_used= tables_used->next_local)
{
if (tables_used->lock_type & (TL_WRITE_LOW_PRIORITY | TL_WRITE))
if (tables_used->lock_type & (TL_WRITE_LOW_PRIORITY | TL_WRITE) &&
tables_used->table)
invalidate_table(tables_used->table);
}
}