[Bug bootstrap/67030] [6 Regression] ARM bootstrap failure due to [-Werror=tautological-compare]

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67030

--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to vries from comment #8)
> FYI, I'm running into this bootstrap failure on x86_64 (r226251):

Weird I don't see this myself.

> ...
> src/gcc/ipa-devirt.c: In function ‘bool types_same_for_odr(const_tree,
> const_tree, bool)’:
> src/gcc/ipa-devirt.c:553:8: error: self-comparison always evaluates to false
> [-Werror=tautological-compare]
>         != (TYPE_BINFO (type1) == NULL_TREE))
> ...

 551       if (TREE_CODE (type1) == RECORD_TYPE
 552           && (TYPE_BINFO (type1) == NULL_TREE)
 553               != (TYPE_BINFO (type1) == NULL_TREE))

Ok, that's a clear typo; something that this warning is designed to detect. 
I'm fixing this separately.  Thanks for reporting.