[quake3-bugzilla] [Bug 5702] QVM execution crashes when compiled with -fstack-protector

[bugzilla-daemon at icculus.org]

https://bugzilla.icculus.org/show_bug.cgi?id=5702

--- Comment #3 from symlink <brian.webbs at gmx.de> 2012-07-07 12:29:59 EDT ---
Even if I apply /dev/hc's patch to an otherwise unmodified checkout of SVN
r2299 and compile with default (Gentoo Hardened's) settings, I get the same
crash. Appending -fno-stack-protector to CFLAGS for the very same unmodified
checkout runs fine.


Thilo, it might not be just that single flag which is causing trouble. While
I'm hesitant to provide you a shell, here's some more info;

  $ emerge --info | head -n1
  Portage 2.1.10.65 (hardened/linux/amd64, gcc-4.5.3, glibc-2.14.1-r3,
3.3.8-gentoo x86_64)
  $ gcc-config -c
  x86_64-pc-linux-gnu-4.5.3

Instead of adding -fno-stack-protector to CFLAGS, you can also select the
*-hardenednossp GCC profile and compile/emerge (see
http://www.gentoo.org/proj/en/hardened/hardenedfaq.xml#hardenedcflags), both
methods result in a working executable.
Doing the reverse and using GCC *-vanilla with -fstack-protector-all also
results in the same crash (with and without /dev/hc's patch).

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