[cfe-dev] Tool oddity
Peter Stirling
peter at pjstirling.plus.com
Thu Mar 26 11:45:25 PDT 2015
Some tests that I've done:
First to investigate what is said by -v:
[peter at fred llvm]$ which clang++
~/Programming/unix-built/clang/bin/clang++
[peter at fred llvm]$ clang++ -v
clang version 3.7.0 (trunk 233281)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.9.2
Selected GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.9.2
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
[peter at fred llvm]$ which quaff
~/Programming/unix-built/clang/bin/quaff
[peter at fred llvm]$ quaff -- -v
clang version 3.7.0 (trunk 233281)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation: /../lib/gcc/x86_64-redhat-linux/4.9.2
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.9.2
Selected GCC installation: /../lib/gcc/x86_64-redhat-linux/4.9.2
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
/lib is a symlink to /usr/lib, so there is really only one installation,
but I'm not sure why they don't use the same list, either both should
have one candidate, or both should have two.
I then tried (with only failure to show for it) a bunch of combinations
of -isystem, and -I for the directory
/home/peter/Programming/unix-built/clang/lib/clang/3.7.0/include/
Which should be the right path for the builtin includes, since I use the
install prefix
/home/peter/Programming/unix-built/clang/
(The contents certainly looks right)
Any further suggestions?
On 26/03/15 01:53, Sean Silva wrote:
> Although the errors don't look like it, could it be something like:
> http://clang.llvm.org/docs/FAQ.html#i-get-errors-about-some-headers-being-missing-stddef-h-stdarg-h ?
>
>
>
> -- Sean Silva
>
> On Wed, Mar 25, 2015 at 6:37 PM, Peter Stirling
> <peter at pjstirling.plus.com <mailto:peter at pjstirling.plus.com>> wrote:
>
> It doesn't, unfortunately (I had subsequently figured out where it
> was creeping in from).
>
>
> On 26/03/15 01:27, Sean Silva wrote:
>> Does the error go away with '-fcolor-diagnostics' instead of
>> '-fcolor-diagnosticsoo'? If it does, then maybe
>> '-fcolor-diagnosticsoo' is generating an error that is not being
>> handled correctly in the tool.
>>
>> -- Sean Silva
>>
>> On Wed, Mar 25, 2015 at 10:32 AM, Peter Stirling
>> <peter at pjstirling.plus.com <mailto:peter at pjstirling.plus.com>> wrote:
>>
>> Hi,
>>
>> I'm seeing some odd behaviour that I hope someone can suggest
>> a solution for:
>>
>> Recently, when I run my tool on my test file I get errors
>> that I don't get if I run clang++ with equivalent options -
>>
>>
>> In file included from
>> /home/peter/Programming/llvm/llvm/tools/clang/tools/extra/quaff/dummy.cc:6:
>> In file included from /usr/include/taglib/taglib.h:47:
>> In file included from
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/string:40:
>> In file included from
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/bits/char_traits.h:39:
>> In file included from
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/bits/stl_algobase.h:63:
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:58:35:
>> error: invalid operands to binary expression ('float' and
>> 'unsigned long')
>> static const _Value __min = __glibcxx_min(_Value);
>> ^~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:48:35:
>> note: expanded from macro '__glibcxx_min'
>> (__glibcxx_signed(_Tp) ? (_Tp)1 << __glibcxx_digits(_Tp) :
>> (_Tp)0)
>> ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:55:12:
>> note: in instantiation of template class
>> '__gnu_cxx::__numeric_traits_integer<float>' requested here
>> struct __numeric_traits_integer
>> ^
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:59:35:
>> error: invalid operands to binary expression ('float' and
>> 'unsigned long')
>> static const _Value __max = __glibcxx_max(_Value);
>> ^~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:52:15:
>> note: expanded from macro '__glibcxx_max'
>> (((((_Tp)1 << (__glibcxx_digits(_Tp) - 1)) - 1) << 1) + 1)
>> : ~(_Tp)0)
>> ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:58:35:
>> error: invalid operands to binary expression ('double' and
>> 'unsigned long')
>> static const _Value __min = __glibcxx_min(_Value);
>> ^~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:48:35:
>> note: expanded from macro '__glibcxx_min'
>> (__glibcxx_signed(_Tp) ? (_Tp)1 << __glibcxx_digits(_Tp) :
>> (_Tp)0)
>> ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:55:12:
>> note: in instantiation of template class
>> '__gnu_cxx::__numeric_traits_integer<double>' requested here
>> struct __numeric_traits_integer
>> ^
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:59:35:
>> error: invalid operands to binary expression ('double' and
>> 'unsigned long')
>> static const _Value __max = __glibcxx_max(_Value);
>> ^~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:52:15:
>> note: expanded from macro '__glibcxx_max'
>> (((((_Tp)1 << (__glibcxx_digits(_Tp) - 1)) - 1) << 1) + 1)
>> : ~(_Tp)0)
>> ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:58:35:
>> error: invalid operands to binary expression ('long double'
>> and 'unsigned long')
>> static const _Value __min = __glibcxx_min(_Value);
>> ^~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:48:35:
>> note: expanded from macro '__glibcxx_min'
>> (__glibcxx_signed(_Tp) ? (_Tp)1 << __glibcxx_digits(_Tp) :
>> (_Tp)0)
>> ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:55:12:
>> note: in instantiation of template class
>> '__gnu_cxx::__numeric_traits_integer<long double>' requested here
>> struct __numeric_traits_integer
>> ^
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:59:35:
>> error: invalid operands to binary expression ('long double'
>> and 'unsigned long')
>> static const _Value __max = __glibcxx_max(_Value);
>> ^~~~~~~~~~~~~~~~~~~~~
>> /../lib/gcc/x86_64-redhat-linux/4.9.2/../../../../include/c++/4.9.2/ext/numeric_traits.h:52:15:
>> note: expanded from macro '__glibcxx_max'
>> (((((_Tp)1 << (__glibcxx_digits(_Tp) - 1)) - 1) << 1) + 1)
>> : ~(_Tp)0)
>> ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> I extracted the command line produced by the
>> FixedCompilationDatabase and printed it with quotes for extra
>> paranoia:
>>
>> 'clang-tool' '-Wall' '-std=c++11' '-fcolor-diagnosticsoo'
>> '/home/peter/Programming/llvm/llvm/tools/clang/tools/extra/quaff/dummy.cc'
>>
>> First thing to observe is that -fcolor-diagnosticsoo seems a
>> bit weird. Second is that running clang++ -Wall -std=c++11
>> /home/peter/Programming/llvm/llvm/tools/clang/tools/extra/quaff/dummy.cc
>> doesn't error.
>>
>> This is on a fedora box, if that makes a difference.
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>>
>>
>
>
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