[Bug bootstrap/60830] [4.9 Regression] ICE on bootstrapping on cygwin

[ktietz at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60830

--- Comment #42 from Kai Tietz <ktietz at gcc dot gnu.org> ---
Second variant of the patch looks ok to me, if bootstrap works for 32-bit and
64-bit cygwin.
Post patch to ML for gcc trunk, and if no further issues are present we can
merge patch to 4.9.1