https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98667
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by H.J. Lu <h...@gcc.gnu.org>: https://gcc.gnu.org/g:77d372abec0fbf2cfe922e3140ee3410248f979e commit r11-6672-g77d372abec0fbf2cfe922e3140ee3410248f979e Author: H.J. Lu <hjl.to...@gmail.com> Date: Thu Jan 14 05:56:46 2021 -0800 x86: Error on -fcf-protection with incompatible target -fcf-protection with CF_BRANCH inserts ENDBR32 at function entries. ENDBR32 is NOP only on 64-bit processors and 32-bit TARGET_CMOV processors. Issue an error for -fcf-protection with CF_BRANCH when compiling for 32-bit non-TARGET_CMOV targets. gcc/ PR target/98667 * config/i386/i386-options.c (ix86_option_override_internal): Issue an error for -fcf-protection with CF_BRANCH when compiling for 32-bit non-TARGET_CMOV targets. gcc/testsuite/ PR target/98667 * gcc.target/i386/pr98667-1.c: New file. * gcc.target/i386/pr98667-2.c: Likewise. * gcc.target/i386/pr98667-3.c: Likewise.