[cfe-dev] recent change broke -fcatch-undefined-behavior

[Jean-Daniel Dupas]

Maybe we should disable vprt in the driver when targeting darwin, or emit an error (like it does when trying to use vptr without RTTI enabled).

Le 16 nov. 2012 à 13:42, Alexey Samsonov <samsonov at google.com> a écrit :

> On Thu, Nov 15, 2012 at 10:33 PM, Jean-Daniel Dupas <devlists at shadowlab.org> wrote:
> If you want to test with trunk, you have to apply the 2 attached patched.
> 
> - clang-ubsan add support to the make toolchain and the driver (Note to Richard: I removed the inclusion of CoreFoundation framework from you previous patch as I think only asan need it and not ubsan).
> - librt-ubsan fixes a couple of build issue in compiler-rt.
> 
> Hi Jean-Daniel,
> 
> I also get undefined symbol errors for symbols:
>                  U __ZTIN10__cxxabiv117__class_type_infoE
>                  U __ZTIN10__cxxabiv120__si_class_type_infoE
>                  U __ZTIN10__cxxabiv121__vmi_class_type_infoE
> but this only happens in a single test: TypeCheck/vptr.cpp
> 
> other tests (with minor fixes) work for me, and ubsan compiles on Mac fine.
> 
> 
> Le 15 nov. 2012 à 18:37, Jonathan Sauer <jonathan.sauer at gmx.de> a écrit :
> 
> > Hello,
> >
> >>> Thanks for the prod, I've checked in some pending patches to add OS X
> >>> support, in r167888, r167889, and r167890. If you could build
> >>> clang_rt.ubsan_osx and let me know whether everything is working as
> >>> intended, that'd be great; we can then ask to get those patches pulled
> >>> onto the 3.2 branch.
> >>
> >> I've rebuilt clang r167897 and still get link errors, ex:
> >>
> >> Undefined symbols for architecture x86_64:
> >> "___ubsan_handle_shift_out_of_bounds", referenced from:
> >
> > I found that currently (i.e. as of last Monday) "make install" doesn't seem to copy
> > the ubsan runtime libraries into clang's runtime library directory as it does for
> > asan. Maybe that's the problem.
> >
> >
> > HTH,
> > Jonathan
> >
> >
> > _______________________________________________
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> > cfe-dev at cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
> 
> -- Jean-Daniel
> 
> 
> 
> 
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> 
> 
> 
> -- 
> Alexey Samsonov, MSK
> 

-- Jean-Daniel




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