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  1. Qt
  2. QTBUG-82690

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

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Won't Do
    • Affects Version/s: 5.13.2, 5.14.1
    • Fix Version/s: None
    • Component/s: Build tools: moc
    • Labels:
      None
    • Environment:
      Debian testing
      gcc version 9.2.1 20200224 (Debian 9.2.1-30)
    • Platform/s:
      Linux/X11

      Description

      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.

       

       

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              Assignee:
              Unassigned Unassigned
              Reporter:
              domin144 Dominik Wójt
              Votes:
              3 Vote for this issue
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                Updated:
                Resolved:

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