[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 #22 from Kai Tietz <ktietz at gcc dot gnu.org> ---
(In reply to Denis Excoffier from comment #21)
> (In reply to Kai Tietz from comment #17)
> > Just as side-note, I tried to reproduce your reported issue and did a
> > personal build of cygwin's gcc.  It worked fine in stage2.  I couldn't
> > reproduce the reported ICE on stage2.  Which brings me to the question if
> > you are using additional patches/fixes, etc
> Did you use 32bits? Did you use a recent cygwin version? There has been some
> movement recently (2014-03-28) in dtors.cc, although i believe that only
> 64bits is impacted.

I built recent gcc 4.9 on my pre-installed cygwin 32-bit (as you did too, as
logs have shown).  Only difference I made was to disable multilib.  And this
you should do too.

Additionally I built x64 version on my cygwin64 environment too.
So from my point of view it isn't a gcc issue.  As both targets are
bootstrapping without issue for me.

So, it might be an issue with recent cygwin, I can test that too.  I will
continue on that tomorrow as it takes me pretty long to built it native.
Nevetheless I doubt that I will find different results for gcc.  And if it is
really dependent on cygwin-dll version, then it seems to me indeed like a
cygwin-bug