Current Firefox nightly is crashing when visiting URL. This page is a test page trying to display a sample of all existing unicode range. (the crash could be due to a bad font). My debug build assert: "###!!! ASSERTION: Failed to place -- we should never hit this: 'SUCCEEDED(rv)', file c:/mozilla/mozilla/gfx/thebes/src/gfxWindowsFonts.cpp, line 1222" Then crash (will attach infos) Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060616 Minefield/3.0a1 ID:2006061617 [cairo] Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060616 Firefox/3.0a1 [debug, cairo] TB19970798Q

-> regression? (I visited this page some time ago with a cairo build without any problem)

Can you turn on logging -- set NSPR_LOG_MODULES=winfonts:5 NSPR_LOG_FILE=c:\foo.log environment variables and look at the bottom of the file to see what font it was trying to use?

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060617 Minefield/3.0a1 Tried it on two computers but I can't make it crash.

(In reply to comment #2) > Can you turn on logging -- set NSPR_LOG_MODULES=winfonts:5 > NSPR_LOG_FILE=c:\foo.log environment variables and look at the bottom of the > file to see what font it was trying to use? OK, from the log: 0[23f58e8]: Trying to find fonts for: th (LANG_THAI) 0[23f58e8]: Looking for other fonts to support the string: 0[23f58e8]: - 0x0e01 0[23f58e8]: Got back: Kinnari, PakType Naqsh, Angsana New, MPH 2B Damase, TITUS Cyberbit Basic, JasmineUPC, Caslon, DilleniaUPC, Norasi, Courier ProportionalThai, KodchiangUPC, Bitstream Cyberbit, AngsanaUPC, EucrosiaUPC, Adobe Thai, Bitstream CyberBase, Code2000, Garuda, BrowalliaUPC, LilyUPC, Saysettha OT, Courier MonoThai, FreesiaUPC, Tahoma, Browallia New, Microsoft Sans Serif, CordiaUPC, Fixedsys Excelsior 2.00, IrisUPC, Arial Unicode MS 0[23f58e8]: trying: Kinnari 0[23f58e8]: Kinnari - worked 0[23f58e8]: ###!!! ASSERTION: Failed to place -- we should never hit this: 'SUCCEEDED(rv)', file c:/mozilla/mozilla/gfx/thebes/src/gfxWindowsFonts.cpp, line 1222 0[23f58e8]: trying: Times New Roman 0[23f58e8]: Trying to find fonts for: th (LANG_THAI) 0[23f58e8]: Looking for other fonts to support the string: 0[23f58e8]: - 0x0e0d 0[23f58e8]: Got back: Kinnari, PakType Naqsh, Angsana New, MPH 2B Damase, TITUS Cyberbit Basic, JasmineUPC, Caslon, DilleniaUPC, Norasi, Courier ProportionalThai, KodchiangUPC, Bitstream Cyberbit, AngsanaUPC, EucrosiaUPC, Adobe Thai, Bitstream CyberBase, Code2000, Garuda, BrowalliaUPC, LilyUPC, Saysettha OT, Courier MonoThai, FreesiaUPC, Tahoma, Browallia New, Microsoft Sans Serif, CordiaUPC, Fixedsys Excelsior 2.00, IrisUPC, Arial Unicode MS 0[23f58e8]: trying: Kinnari -> CRASH here

(In reply to comment #2) Removing the 'Kinari' font fixed the crash.

Yupi! now I see it too, with Kinnari.

Regression between 1.9a1_2006060916 and 1.9a1_2006060921 which points to bug 340590.

-> keywords += regression Thanks for the range Ria :)

I'll check it out. I'm having similar problems with another font that I've been trying to track down.

this fixes the crash by continueing font selection when placing fails. it does some other things too.. tweaks font ranking a bit to provide better results. also does better caching and avoids selecting fonts when we don't need to.