[Bug libfortran/62188] Array bounds overrun in bessel_yn_r4/8/16 and other functions

[sgk at troutmask dot apl.washington.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62188

--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Tue, Aug 26, 2014 at 01:08:22PM +0000, burnus at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62188
> 
> Tobias Burnus <burnus at gcc dot gnu.org> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |burnus at gcc dot gnu.org
> 
> --- Comment #8 from Tobias Burnus <burnus at gcc dot gnu.org> ---
> (In reply to kargl from comment #7)
> > > Actually, no.  We inspected the function manually looking for the
> > > cause of a test FAIL of bessel_7.f90 and just stumbled across it.
> 
> Which would be:
>   https://gcc.gnu.org/ml/gcc-patches/2014-08/msg02311.html
> 
> > Committed to trunk and all open branches.
> 
> Steve, should we also add a test case for the "n1 < 0"?
> 

I only looked at the specific issue raised by OP.  If 
calling bessel_yn() with n1 < 0 violates requirements 
of the standard, then yes we should probably check for
that situation.  I'll cast an eye over this later today.