https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84148
Bug ID: 84148 Summary: CET shouldn't be enabled in 32-bit run-time libraries by default Product: gcc Version: 8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: hjl.tools at gmail dot com CC: igor.v.tsimbalist at intel dot com Blocks: 81652 Target Milestone: --- ENDBR32 and RDSSPD are multi-byte NOPs on x86-64 processors and newer x86 processors. They are UD on older 32-bit processors. We should enable CET in 32-bit run-time libraries only if --enable-cet is used to configure GCC. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81652 [Bug 81652] [meta-bug] -fcf-protection=full -mcet bugs