213411 2008-03-14 17:06 0000 x11-libs/qt-4.3.x has aliasing problems 2009-01-03 01:33:23 0000 1 1 1 Unclassified Gentoo Linux Ebuilds 2007.0 All Linux RESOLVED FIXED http://cvs.fedoraproject.org/viewcvs/*checkout*/devel/qt/qt-x11-opensource-src-4.3.4-aliasing.patch P2 normal --- 214218 1 h.mth@web.de qt@gentoo.org gnu_andrew@member.fsf.org liquitsnake@gmx.net loki_val@gentoo.org h.mth@web.de 2008-03-14 17:06:43 0000 The Qt library version 4.3.x has problems with aliasing. These should be fixed in 4.4. Some gcc versions with optimization '-O2' or '-fstrict-aliasing' compile Qt but throw segmentation faults at runtime. See my mailing list thread at Qt-interest: http://lists.trolltech.com/qt-interest/2008-03/thread00368-0.html (Message 6 and onwards get interesting.) One issue is fixed with the patch from fedora on URL. But on f.g.o and b.g.o I see Qt segfaulting other way, the QApplication constructor. I recommend to add 'append-flags -fno-strict-aliasing' in src_compile before configure is called. References: https://forums.gentoo.org/viewtopic-t-668006.html https://forums.gentoo.org/viewtopic-t-492597.html https://forums.gentoo.org/viewtopic-t-674330.html https://bugs.gentoo.org/192954 ingmar@gentoo.org 2008-03-19 04:30:58 0000 Fixed in qt-4.3.4-r1, thanks for letting us know. :) jakub@gentoo.org 2008-03-22 06:47:32 0000 *** Bug 214223 has been marked as a duplicate of this bug. *** jakub@gentoo.org 2008-03-22 06:58:32 0000 Reopen wrt Bug 214218, this thing looks more borked than this... halcy0n@gentoo.org 2008-05-03 19:01:55 0000 I don't see a porting problem here :) yngwin@gentoo.org 2009-01-03 01:30:39 0000 *** Bug 241828 has been marked as a duplicate of this bug. ***