[llvm] r298127 - LTO: Work around libstdc++ version mismatch bug, see D31063 review thread.

[Peter Collingbourne via llvm-commits]

On Mon, Mar 20, 2017 at 6:06 AM, Rafael Avila de Espindola <
rafael.espindola at gmail.com> wrote:

> Peter Collingbourne via llvm-commits <llvm-commits at lists.llvm.org>
> writes:
>
> > Author: pcc
> > Date: Fri Mar 17 16:49:09 2017
> > New Revision: 298127
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=298127&view=rev
> > Log:
> > LTO: Work around libstdc++ version mismatch bug, see D31063 review
> thread.
> >
> > Modified:
> >     llvm/trunk/lib/LTO/Caching.cpp
> >
> > Modified: llvm/trunk/lib/LTO/Caching.cpp
> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/LTO/Cachi
> ng.cpp?rev=298127&r1=298126&r2=298127&view=diff
> > ============================================================
> ==================
> > --- llvm/trunk/lib/LTO/Caching.cpp (original)
> > +++ llvm/trunk/lib/LTO/Caching.cpp Fri Mar 17 16:49:09 2017
> > @@ -37,7 +37,10 @@ Expected<NativeObjectCache> lto::localCa
> >        return AddStreamFn();
> >      }
> >
> > -    if (MBOrErr.getError() != std::errc::no_such_file_or_directory)
> > +    // FIXME: Workaround for libstdc++ version mismatch bug, see D31063
> review
> > +    // thread.
> > +    if ((std::errc)MBOrErr.getError().value() !=
> > +        std::errc::no_such_file_or_directory)
> >        report_fatal_error(Twine("Failed to open cache file ") +
> EntryPath +
> >                           ": " + MBOrErr.getError().message() + "\n");
>
> Can't you use llvm::errc?
>

It seems likely that it will help. I will try it and keep an eye on the
bots.

Thanks,
-- 
-- 
Peter
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