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Fix for BUG#12414917 - ISCLOSED() CRASHES ON 64-BIT BUILDS

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Problem:      
lack of incoming geometry data validation may 
lead to a server crash when ISCLOSED() function called.

Solution:
necessary incoming data check added.
This commit is contained in:
Ramil Kalimullin
2012-03-05 21:58:07 +04:00
parent 98642459db
commit 44d88da575
3 changed files with 15 additions and 1 deletions
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3
sql/spatial.cc
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@ -627,7 +627,8 @@ int Gis_line_string::is_closed(int *closed) const
return 0;
}
data+= 4;
if (no_data(data, SIZEOF_STORED_DOUBLE * 2 * n_points))
if (n_points == 0 ||
no_data(data, SIZEOF_STORED_DOUBLE * 2 * n_points))
return 1;
/* Get first point */