Using gcc-6* to compile dev-qt/qtxmlpatterns-4.8.7 fails with
/var/tmp/portage/dev-qt/qtxmlpatterns-4.8.7/work/qt-everywhere-opensource-src-4.8.7/src/xmlpatterns/api/qcoloroutput_p.h:74:59: error: shift expression '(1048575 << 20)' overflows [-fpermissive]'
Created attachment 433810 [details]
Created attachment 433812 [details]
Created attachment 433814 [details, diff]
Patch for qtxmlpatterns-4.8.7 to effectively compile with gcc-6*.
Taken from http://pkgs.fedoraproject.org/cgit/rpms/qt.git/tree/qt-everywhere-opensource-src-4.8.7-gcc6.patch
*** Bug 594784 has been marked as a duplicate of this bug. ***
*** Bug 594932 has been marked as a duplicate of this bug. ***
*** Bug 596456 has been marked as a duplicate of this bug. ***