[Bug c/67680] Seg Fault in gcc 4.9.3 compiling libiberty/floatformat.c when building gcc 5.2.1 on Cygwin 64 on Windows

[bplummer at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67680

--- Comment #3 from Brian Plummer <bplummer at hotmail dot com> ---
As requested.