Control: retitle -1 libsbc1: compiling with gcc > 4.9 causes stack corruption
On Fri, Mar 3, 2017 at 3:24 PM, Linus Lüssing <linus.luess...@c0d3.blue> wrote: > On Fri, Mar 03, 2017 at 01:14:56PM -0300, Felipe Sateler wrote: >> It has been pointed out to me that this may be unrelated to PIE, but >> just caused by a newer GCC version. Could you check if disabling PIE >> makes the binary work again? To do so: >> >> apt-get source sbc >> sudo apt-get build-dep sbc >> cd sbc-1.3 >> DEB_BUILD_OPTIONS=hardening=-pie dpkg-buildpackage -us -uc >> sudo dpkg -i ../libsbc1_*.deb > > Tried it, but still crashes. I also tried: > > 0) dpkg-buildpackage -us -uc > 1) > DEB_BUILD_OPTIONS=hardening=-stackprotectorstrong,-stackprotector,-pie,-fortify > dpkg-buildpackage -us -uc > 2) DEB_BUILD_OPTIONS=hardening=-all dpkg-buildpackage -us -uc > 3) CC=gcc-5 dpkg-buildpackage -us -uc > > But the resulting packages/libraries crash, too. > > ~~~ > $ gcc --version > gcc (Debian 6.3.0-8) 6.3.0 20170221 > $ gcc-5 --version > gcc-5 (Debian 5.4.1-5) 5.4.1 20170205 > ~~~ > > What seems to work though: > ~~~ > $ CC=clang dpkg-buildpackage -us -uc > [...] > $ sudo dpkg -i ../libsbc1_*.deb > ~~~ Thanks for verifying! The problem would not be PIE then. It appears the custom assembler is not compatible with current gcc versions. -- Saludos, Felipe Sateler
