I've found that freetype 2.4.3 breaks at least one application that used to work with freetype 2.4.2, and will work again after a downgrade of freetype. Unfortunately the application in question is a closed source game, Osmos by Hemisphere Games. You can get a free Demo at http://www.hemispheregames.com/latest_osmos_demo_linux_targz in order to give it a try. I guess that where one application is affected, others might be as well, so keep an eye out on breakage. As to the symptoms of this problem: starting the game from the command line will first show some splash animation, then it will drop you into a main screen with an an arrangement of circular blobs. The center one should be labeled but isn't. Pressing escape gives you a menu, but all labels in that menu as well as its tooltips are missing as well. The second menu item is the one to exit the game, and you'll have to press space after selecting it. Back to the command line, you'll see seven error messages stating: WARNING: error loading font file Fonts/FortuneCity.ttf The font is there, though. strace says its file got opened correctly. So I guess it's some ttf font loading routine that fails for some reason.
Created attachment 250245 [details] emerge --info
The font file itself appears broken. Running through ftlint: $ ftlint 10 Fonts/FortuneCity.ttf Fonts/FortuneCity.ttf: glyph 106: 0x0014 1 fail.
(In reply to comment #2) > The font file itself appears broken. Running through ftlint: > > $ ftlint 10 Fonts/FortuneCity.ttf > Fonts/FortuneCity.ttf: glyph 106: 0x0014 > 1 fail. Running it through ftlint from freetype 2.4.2: $ ftlint 10 Fonts/FortuneCity.ttf Fonts/FortuneCity.ttf: OK. So this only tells us that freetype 2.4.3 has problems with the font which 2.4.2 didn't have, but doesn't rule out a new bug in freetype. Nevertheless, ftlint (which I didn't know of before, and which wasn't built on my system as it requires USE=utils) is a useful pointer in investigating this issue. Using ftlint to test this issue quickly, I was able to bisect it in git and found the following commit as the one making a difference: http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=643d49df0919b56c6603ab9310839899b77aad8a I don't know enough about the TTF format to check whether this was implemented correctly, but for the moment I'll assume that it is, and take this issue upstream to Hemisphere Games: http://www.hemispheregames.com/forum/viewtopic.php?f=8&t=498
Hmm, turns out we weren't enabling debug tracing. If you sync up and remerge freetype with USE="debug" you can now do this: $ FT2_DEBUG=any:1 ftlint 20 FortuneCity.ttf Init_Context: new object at 0x0xc80360 FT_Stream_Open: opened `FortuneCity.ttf' (40303 bytes) successfully tt_face_get_location: too large offset=0x00005450 found for gid=0x006b, truncate at the end of glyf table (0x00005394) FortuneCity.ttf: glyph 106: 0x0014 tt_face_get_location: too large offset=0x00005450 found for gid=0x006b, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005450 found for gid=0x006c, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005450 found for gid=0x006d, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005450 found for gid=0x006e, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x000056a2 found for gid=0x006f, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x000056a2 found for gid=0x0070, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005775 found for gid=0x0071, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005775 found for gid=0x0072, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005775 found for gid=0x0073, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x000057e6 found for gid=0x0074, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x000058ae found for gid=0x0075, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005954 found for gid=0x0076, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005954 found for gid=0x0077, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005954 found for gid=0x0078, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005a1e found for gid=0x0079, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005a1e found for gid=0x007a, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005a1e found for gid=0x007b, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005a1e found for gid=0x007c, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005a1e found for gid=0x007d, exceeding the end of glyf table (0x00005394) tt_face_get_location: too large offset=0x00005b3e found for gid=0x007e, exceeding the end of glyf table (0x00005394) [...] 1 fail. which supports your findings.
(In reply to comment #0) > I've found that freetype 2.4.3 breaks at least one application that used to > work with freetype 2.4.2, and will work again after a downgrade of freetype. > > Unfortunately the application in question is a closed source game, Osmos by > Hemisphere Games. You can get a free Demo at > http://www.hemispheregames.com/latest_osmos_demo_linux_targz in order to give > it a try. I guess that where one application is affected, others might be as > well, so keep an eye out on breakage. > > As to the symptoms of this problem: starting the game from the command line > will first show some splash animation, then it will drop you into a main screen > with an an arrangement of circular blobs. The center one should be labeled but > isn't. Pressing escape gives you a menu, but all labels in that menu as well as > its tooltips are missing as well. The second menu item is the one to exit the > game, and you'll have to press space after selecting it. Back to the command > line, you'll see seven error messages stating: > > WARNING: error loading font file Fonts/FortuneCity.ttf > > The font is there, though. strace says its file got opened correctly. So I > guess it's some ttf font loading routine that fails for some reason. > Try using my ebuild on http://bugs.gentoo.org/show_bug.cgi?id=327435 , fix the FortuneCity font ;)
(In reply to comment #5) > Try using my ebuild on bug #327435, fix the FortuneCity font ;) That ebuild replaces FortuneCity with DejaVuSans, which is a workaround not a fix. I offered a real fix on the upstream bug report: http://www.hemispheregames.com/forum/viewtopic.php?f=8&t=498#p2706 That will be included in the next Osmos release.
