I guess unmasking FPU's denormal exception flag is a trigger of this bug. I made a small source code, bug.c, to demonstrate it.
Please compile it with following instruction: | % gcc -o bug bug.c -lfontconfig Then run it. | % ./bug | zsh: floating point exception ./bug The code crashed with SIGFPE. But the following: | % gcc -DBUG_OFF -o bug bug.c -lfontconfig | % ./bug It works fine. ** Attachment added: "Proof of concept" https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/286175/+attachment/2325297/+files/bug.c -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/286175 Title: evince crashed with SIGSEGV in FcConfigSubstituteWithPat() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cairo/+bug/286175/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
