Björn Harrtell

@mikkelfj flatbuf3 buffer was created with this flatcc code (test case in this PR), same as initially presented in this PR that you said was valid but that the verifier...

Hmm ok.. strange.. I tried to be careful with the dumps but I had to find something to do it in C++ that's why the format isn't exactly the same....

Well, I have double checked and I cannot get `04 00 00 00 F4 FF FF FF 04 00 00 00 00 00 00 00 06 00 08 00 04...

Unfortunately the C++ verifier does not seem to have any means of error reporting unless I'm missing something and I need to refresh skills in gdb to provide any other...

Ok so back to the non size prefixed buffer with zero sized vector in it.. still do not verify (not sure I got the malloc / memcpy part right for...

@dr-jts I've opted in the interpolation in the test cases where it is the assumption.

I've now reworked this so that the option to Z-interpolate is standalone and affects both RobustLineIntersector and ElevationModel.

Since Z interpolation has now been enabled for so long time it's no longer sensible to regard it as a regression. So I've changed it to be default on in...

@jodygarnett and @dr-jts please consider accepting this.

Ah sorry, might not been clear, this does not replace #200 but depends on it. I intend to rebase/work this if/when #200 can be merged and so only the last...