Gentoo's Bugzilla –
Attachment 598510 Details for
Bug 701886[qt overlay] media-gfx/digikam-6.3.0-r1 w/ Qt 5.14.0_beta3: In file included from core/libs/pgfutils/pgfutils.cpp:24: /usr/include/qt5/QtCore/qglobal.h:1044:7: error: invalid conversion from ‘long int’ to ‘QDebug::Stream*’ [-fpermissive]