This one is caused by an initialization bug of some sort, the
byteSizes of ODBC-structs are incorrect.
In short, the solution is to do:
ExternalStructure allSubclassesDo: [:each | each compileFields]
after you load a package which defines ExternalStructure subclasses
(like ODBC does).
For some reason, in an image after loading:
ExternalStrucure >> byteSize
"Return the size in bytes of this structure."
^self compiledSpec first bitAnd: FFIStructSizeMask
SQLHENV compiledSpec first: 65536
FFIStructSizeMask: 65535...
So basically, when you allocate the struct a handle of a ByteArray of
size byteSize, you'll sooner or later you access unallocated memory
and crash.
Recomputing all the compiledSpecs with the doit above leads to the
correct sizes (4 in the case of SQLHENV) being stored in the
compiledSpecs.
Either way, not raising an error when the size for a struct when
and'ed with the mask, but instead causing a silent crash later on
just seems bad bad bad to me.
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