• MySQL Build Team's avatar
    Backport into build-201002030816-5.0.87sp1 · e7219624
    MySQL Build Team authored
    > ------------------------------------------------------------
    > revno: 2818.1.6
    > revision-id: joro@sun.com-20091021084345-iki6z0uceieoupey
    > parent: ramil@mysql.com-20091023112648-gie6o3odj57cxh1e
    > committer: Georgi Kodinov <joro@sun.com>
    > branch nick: B47780-5.0-bugteam
    > timestamp: Wed 2009-10-21 11:43:45 +0300
    > message:
    >   Bug #47780: crash when comparing GIS items from subquery
    >         
    >   If the first argument to GeomFromWKB function is a geometry
    >   field then the function just returns its value.
    >   However in doing so it's not preserving first argument's 
    >   null_value flag and this causes unexpected null value to
    >   be returned to the calling function.
    >         
    >   Fixed by updating the null_value of the GeomFromWKB function
    >   in such cases (and all other cases that return a NULL e.g.
    >   because of not enough memory for the return buffer).
    e7219624
item_geofunc.cc 16.6 KB