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  1. Qt Creator
  2. QTCREATORBUG-19086

CLang Code Model fails to parse type_traits header with -std=c++17 gcc flag

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    • Icon: Bug Bug
    • Resolution: Duplicate
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    • None
    • Qt Creator 4.4.1
    • Analyzer: Clang Tidy & Clazy
    • None
    • Qt Creator 4.4.1
      Based on Qt 5.9.2 (GCC 5.3.1 20160406 (Red Hat 5.3.1-6), 64 bit)
      Built on Oct 4 2017 04:14:10

      QT Version 5.9.2

      gcc version 7.2.1 20170915

      Clang Code Model fails to parse type_traits header with c++17 support enabled.
      Error: type_traits:3062:7: error: expected '(' for function-style cast or type construction

      Lines causing error in type_traits

      #ifdef _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP
# define __cpp_lib_has_unique_object_representations 201606
  /// has_unique_object_representations
  template<typename _Tp>
    struct has_unique_object_representations
    : bool_constant<__has_unique_object_representations(
      remove_cv_t<remove_all_extents_t<_Tp>>
      )> //LINE 3062
    { };
#endif
#undef _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP

      Code that reproduces error:

      #include <QAudioFormat>
#include <optional>

class IAudioFormatNegotiator
{
public:
    virtual ~IAudioFormatNegotiator();
    virtual std::optional<QAudioFormat> negotiateFormat() = 0;
};

        1. clang_error_qt_creator_4_4_1.png
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            kosjar Nikolai Kosjar
            nwinterer Nick Winterer
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              Created:
              Updated:
              Resolved:

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