On 29.01.21 г. 18:49 ч., Josh Poimboeuf wrote: > Agreed, stable is a good idea. I think Nikolay saw it with GCC 9. Yes I did, with the default Ubuntu compiler as well as the default gcc-10 compiler: # gcc -v -Q -O2 --help=target | grep protection gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04) COLLECT_GCC_OPTIONS='-v' '-Q' '-O2' '--help=target' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-linux-gnu/9/cc1 -v -imultiarch x86_64-linux-gnu help-dummy -dumpbase help-dummy -mtune=generic -march=x86-64 -auxbase help-dummy -O2 -version --help=target -fasynchronous-unwind-tables -fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection -fcf-protection -o /tmp/ccSecttk.s GNU C17 (Ubuntu 9.3.0-17ubuntu1~20.04) version 9.3.0 (x86_64-linux-gnu) compiled by GNU C version 9.3.0, GMP version 6.2.0, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.22.1-GMP It has -fcf-protection turned on by default it seems.
