https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95621
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |INVALID CC|hjl at gcc dot gnu.org |hjl.tools at gmail dot com --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- I don't think PTA_SHSTK is needed since -mshstk is only used to enable CET in run-time library which is backward compatible. GCC run-time libraries are compiled with -mshstk when CET is enabled. As for IBT, ENDBR is generated with -fcf-protection for all processors. The whole CET thing is backward compatible. We don't need to add PTA_SHSTK to Tiger Lake.