Re: GCD bug?

[Kevin Ryde]

"Ken Kahn" <address@hidden> writes:
>
> that it crashes when usize=-1

Well that's definitely wrong, but it's not obvious how that would
arise.  The gcd loop is supposed to maintain usize>=vsize, and to go
to the binary finish-up when vsize<=2.

Some of the assertions might help narrow it down.  Edit or add to
config.h,

        #define WANT_ASSERT 1

and recompile everything.  See if you can get the C versions of the
low level routines too, not the assembler versions, since the latter
don't have checking.  (Should be as easy as compiling submul_1.c
instead of submul_1.asm.)

What you'll hope to see is some assertion go off at a nice early
stage.  It'll do an abort(), which you can catch in the debugger and
go from there.

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