Not the most pressing problem you've encountered because the code shouldn’t compile anyway and I didn’t spot it in the wild, but rather consciously abused the compiler... ```pascal {$mode objfpc} generic function Size<T>: SizeUint; begin result := sizeof(T); end; var a: array[0 .. specialize Size<double> - 1] of byte; begin end. ``` This code should not compile because it attempts to use a function result in constant context. With non-generic function, it gives `Illegal expression` or `Can’t evaluate constant expression`, which is fair. But using a generic function complements it with slightly annoying `Internal error 2015061207`.