[Bug driver/65264] compare debug failure when using stdin

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65264

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Target|powerpc64*-*-*              |

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Only on ppc?

No, it is a general issue. Not sure how to fix it;
other than saving stdin to a tmp file in case of -fcompare-debug.