[Debian-astro-maintainers] Bug#788699: stellarium: Hangs after moving to the past/future by several days

[Tomasz Buchert]

On 15/06/15 00:46, Tomasz Buchert wrote:
> [...]
> Could it be a compiler bug that miscompiled the loop for
> 0.13.3-2?

I take it back, now I think it is not compiler issue (see below).  I
extracted the parameters that make the loop infinite and made a
minimal program that shows the problem (attached).

As you can see, it converges quite rapidly, but finally |E-Ep| stays
bigger than 1e-10 and E oscilates between 2 values. An engineer's way
to solve it would be to let the loop run for, say, 100 iterations,
and if it didn't converge, just show a warning.

Cheers,
Tomasz
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