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  1. Qt
  2. QTBUG-82690

Build failure: error: expected template-name before '<' token, qabstractgallery.cpp

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    • Icon: Bug Bug
    • Resolution: Won't Do
    • Icon: P2: Important P2: Important
    • None
    • 5.13.2, 5.14.1
    • Build tools: moc
    • None
    • Debian testing
      gcc version 9.2.1 20200224 (Debian 9.2.1-30)
    • Linux/X11

      When building qt from source I get following error:

       

      dwojt@debian:~/local/qt5$ ~/sources/external/qt5/configure -developer-build -opensource -confirm-license -nomake examples -nomake tests
(...)
dwojt@debian:~/local/qt5$ make
In file included from /usr/include/c++/9/memory:67,
                 from .moc/moc_qabstractgallery.cpp:9,
                 from /home/dwojt/sources/external/qt5/qtdocgallery/src/gallery/qabstractgallery.cpp:125:
/usr/include/c++/9/bits/stl_raw_storage_iter.h:69:22: error: expected template-name before '<' token
   69 |     : public iterator<output_iterator_tag, void, void, void, void>
      |                      ^

      When investigating contents of qabstractgallery.cpp, I found that "moc_qabstractgallery.cpp" is included from within QT_{BEGIN|END}_NAMESPACE_DOCGALLERY .

      Then moc_qabstractgallery.cpp includes "<memory>". Effectively "<memory>" gets included from namespace "QDocGallery".

      Adding "#include <memory>" before QT_BEGIN_NAMESPACE_DOCGALLERY allows compilation of this file to succeed, which confirms my diagnosis.

      Please prevent system includes from being included from inside a namespace.

       

       

        1. moc_include_outside_namespace.patch
          2 kB
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            Unassigned Unassigned
            domin144 Dominik Wójt
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              Created:
              Updated:
              Resolved:

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