moc fails to parse include inside enum

[Graham Inggs]

Seen while trying to rebuild gudhi against qtbase5-dev/ 5.15.3+dfsg-1 :

AutoMoc subprocess error
------------------------
The moc process failed to compile
"SRC:/src/GudhUI/gui/MainWindow.cpp"
into
"SRC:/build/userversion/src/GudhUI/GudhUI_autogen/include/MainWindow.moc"
included by
"SRC:/src/GudhUI/gui/MainWindow.cpp"

...

Output
------
usr/include/tbb/tbb_profiling.:29: Parse error at "/usr/include/tbb/internal/_tbb_strings.h"

Previous builds against qtbase5-dev/5.15.2+dfsg-15 were successful [1].
I found an upstream bug [2] with the same error, although the versions differ.
I also found similar bug [3] that is reported to be fixed in 5.15.6.

[1] https://launchpad.net/ubuntu/+source/gudhi/3.5.0+dfsg-1ubuntu1
[2] https://bugreports.qt.io/browse/QTBUG-94790
[3] https://bugreports.qt.io/browse/QTBUG-80990

[Graham Inggs (ginggs)]

Failing logs are now visible at:
https://launchpad.net/ubuntu/+source/gudhi/3.5.0+dfsg-1ubuntu2

[Graham Inggs (ginggs)]

Reverting src/tools/moc/moc.cpp to as it was in 5.15.2+dfsg-15 (as per the attached patch) allows gudhi to build successfully again.

[Launchpad Janitor (janitor)]

This bug was fixed in the package qtbase-opensource-src - 5.15.3+dfsg-2

---------------
qtbase-opensource-src (5.15.3+dfsg-2) experimental; urgency=medium

  [ Andrea Pappacoda ]
  * Backport upstream patch to fix qtconcurrentthreadengine.h with GCC 11.
    - Closes: #1008391

  [ Dmitry Shachnev ]
  * Backport upstream patch to fix parsing include inside enum (LP: #1968074).

 -- Dmitry Shachnev <email address hidden> Thu, 07 Apr 2022 18:50:52 +0300