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Bug#23280059: ITEM_ROW::ILLEGAL_METHOD_CALL(CONST CHAR*):

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ASSERTION `0' FAILED ON SELECT AREA

Problem:
Optimizer tries to get the points to calculate area without
checking the return value of uint4korr for 0 "points". As a
result server exits.

Solution:
Check the return value from uint4korr().
This commit is contained in:
Chaithra Gopalareddy 2016-07-19 08:03:09 +05:30
parent 09784e244b
commit 54e887b2fe
1 changed files with 3 additions and 1 deletions
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4
sql/spatial.cc
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@ -1,5 +1,5 @@
/*
Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -849,6 +849,8 @@ int Gis_polygon::area(double *ar, const char **end_of_data) const
if (no_data(data, 4))
return 1;
n_points= uint4korr(data);
if (n_points == 0)
return 1;
if (not_enough_points(data, n_points))
return 1;
get_point(&prev_x, &prev_y, data+4);