https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78077
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |egallager at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jack Howarth from comment #6)
> (In reply to Iain Sandoe from comment #5)
> > (In reply to Jack Howarth from comment #4)
> > > The Apple developers think this is gcc bug producing malformatted input to
> > > the linker. From macho_relocatable_file.cpp, we are triggering the linker
> > > check...
> > >
> > > #ifndef NDEBUG
> > > // scan for FDEs claming the same function
> > > for(uint32_t i=1; i < cfiStartsArrayCount; ++i) {
> > > assert( cfiStartsArray[i] != cfiStartsArray[i-1]
> > > );
> > > }
> > > #endif
> >
> > If it's a 0-length FDE caused by a 0-length function, then this is a repeat
> > of 57438. If so please mark it accordingly (I expect to post a fix for
> > 57438 soon, and I can send you a preview if that helps).
> >
> > If this is something different, then please can we have a reduced test-case.
> > Thanks
>
> A reduced test case is unlikely but I can confirm that this appears to be
> due to PR57438 since passing -D__builtin_unreachable=__builtin_trap by
> using...
>
> ../configure --enable-link-time-optimization --without-ns
> CC=/sw/bin/gcc-fsf-6 CXX=/sw/bin/g++-fsf-6
> CPPFLAGS="-D__builtin_unreachable=__builtin_trap -I/sw/include"
> LDFLAGS="-L/sw/lib"
>
> produces a successful build at -O2 with LTO under stock gcc 6.2.0 and Xcode
> 8.1 GM's linker.
OK, closing it as a duplicate of bug 57438 then.
*** This bug has been marked as a duplicate of bug 57438 ***
