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

[gcc@Denis-Excoffier.org]

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

--- Comment #14 from Denis Excoffier <gcc@Denis-Excoffier.org> ---
I'm now using plain cygwin-1.7.29-2, the cygwin1.dbg now matches with
cygwin1.dll. I've alto tried to recompile without -O2. I'm not so familiar with
gdb, i've produced a session where i break at __call_exitprocs (in
cygwin1.dll), that shows that the destructors are not called more than once.
But i now obtain 2 SEGV. Hope this helps. See attachment 32600.