> On Dec 16, 2016, at 5:50 AM, Matt Wette <matt.wette@gmail.com> wrote:
> 
> OK.  This is gonna be hard to trace down.
> 
> I am on a Mac running Sierra, 10.12.2.  At work I am running 10.9 I believe, and I see the same behavior.
> 
> 
> If I compile with gcc 6.2 or gcc4.9, but no extra flags besides —prefix, I get the following failure:
> 
> FAIL: numbers.test: string->number: valid complex number strings
> 
> and trace this down to 
> 
> meta/guile -c '(display (eqv? (imag-part (string->number "#i1@-0")) -0.0))' => #f

I am now compiling with clang-3.9 and getting fatal errors.  Stay tuned …