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[Bug debug/81278] [8 Regression] -fcompare-debug failure (length)
- From: "trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 03 Jul 2017 12:19:35 +0000
- Subject: [Bug debug/81278] [8 Regression] -fcompare-debug failure (length)
- Auto-submitted: auto-generated
- References: <bug-81278-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81278
--- Comment #15 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #14)
> Well, I've just noticed that the revision I identified is problematic
> because of compilation errors like:
>
> /home/trippels/gcc_test/usr/local/include/c++/8.0.0/type_traits:143:12:
> error: ‘value’ is not a member of
> ‘std::is_constructible<llvm::DenseMapIterator<llvm::DIGlobalVariable*,
> llvm::detail::DenseSetEmpty, llvm::MDNodeInfo<llvm::DIGlobalVariable>,
> llvm::detail::DenseSetPair<llvm::DIGlobalVariable*>, false>,
> llvm::DenseMapIterator<llvm::DIGlobalVariable*, llvm::detail::DenseSetEmpty,
> llvm::MDNodeInfo<llvm::DIGlobalVariable>,
> llvm::detail::DenseSetPair<llvm::DIGlobalVariable*>, false>&&>’
>
> ... and not because of debug compare.
> Can you please do a pre-processed file with a bit older compiler in order to
> bisect over the revision?
See above. Simply build LLVM trunk (release build) with gcc using
GCC_COMPARE_DEBUG=1.