Georgi Kodinov dd02c4a12b 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).

2009-10-21 11:43:45 +03:00

30 KiB

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