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Fix for bug#16532 mysql server assert in debug if table definition is removed

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Emit an error instead of doing ASSERT


mysql-test/r/create_not_windows.result:
  update result
mysql-test/t/create_not_windows.test:
  Add test case for bug #16532: mysql server assert in debug if table definition is removed
sql/sql_table.cc:
  it could happen that an user deletes the frm file on OS level.
  In addition if the table was already opened, the file system level
  check for existance of table.frm will pass but get_cached_table_share()
  will return non-NULL value. In this case we will emit the standard
  error that the table exist. The error case is quite obscure but error
  message is better than a sigabort.
This commit is contained in:
unknown
2006-07-25 14:52:24 +02:00
parent d090462abc
commit 7c9d15af31
3 changed files with 51 additions and 1 deletions
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14
sql/sql_table.cc
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@@ -3321,7 +3321,19 @@ bool mysql_create_table_internal(THD *thd,
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name);
goto unlock_and_end;
}
DBUG_ASSERT(get_cached_table_share(db, alias) == 0);
/*
We don't assert here, but check the result, because the table could be
in the table definition cache and in the same time the .frm could be
missing from the disk, in case of manual intervention which deletes
the .frm file. The user has to use FLUSH TABLES; to clear the cache.
Then she could create the table. This case is pretty obscure and
therefore we don't introduce a new error message only for it.
*/
if (get_cached_table_share(db, alias))
{
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), table_name);
goto unlock_and_end;
}
}
/*