[Debian-astro-maintainers] Bug#844490: [pkg-boost-devel] Bug#844495: Bug#844490: FTBFS with boost1.62

[Steve M. Robbins]

On Wednesday, November 16, 2016 12:16:22 PM CST Thibaut Paumard wrote:
> Control: tags 844490 +pending
> Control: severity 844495 normal
> 
> For the record, the bug appears when doing:
> 
> acos(cos(alpha100)*cos(delta100));
> 
> where the type of alpha100 and delta100 is
> boost::multiprecision::cpp_dec_float_100.
> 
> I've realized that, when acos() does not return, delta100 above is
> always zero. I can simplify the case by simply doing
> acos(cos(alpha100))
> 
> in which case acos() also does not return. Does not look like a memory
> leak after all.
> 
> However, doing just that in an isolated main function does not exhibit
> the bug (I've also tried activating all the hardening features)

So when you say "doing just that" in isolated main ... do you mean
doing
	acos(cos(alpha100)*cos(delta100)) 
or
	acos(cos(alpha100))?

Did you succeed to find any small test case at all?  It would be good to have 
one and report it upstream.

Thanks,
-Steve
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