[Bug target/65979] Multiple issues in conftest.c prevent build on sh4-linux-gnu

[glaubitz at physik dot fu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65979

--- Comment #9 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
(In reply to Kazumoto Kojima from comment #8)
> You can revert the above changes to see what happens.  Looks safe
> changes to me, but some changes could reveal hidden problems.
> If the issue remains even if all those changes are reverted,
> there will be no easy way to narrow down.

Ah, I was actually just about to compile a list with the changes that went into
gcc-4.9 after -10 which was still working, so thanks for that.

I haven't worked with the gcc code base before, so any suggestions on how to
work through the code?

I would just checkout the code from git://gcc.gnu.org/git/gcc.git now and
revert change after change to see if that fixes it.

Adrian