SLS support in rustc (target features or dedicated flags) · Issue #116851 · rust-lang/rust (original) (raw)

Currently:

-Ctarget-feature="+harden-sls-ijmp" -Ctarget-feature="+harden-sls-ret"

seems to work as expected, but the features are unknown, and so since 1.61 they emit a warning:

warning: unknown feature specified for -Ctarget-feature: harden-sls-ijmp | = note: it is still passed through to the codegen backend = help: consider filing a feature request

warning: unknown feature specified for -Ctarget-feature: harden-sls-ret | = note: it is still passed through to the codegen backend = help: consider filing a feature request

Could/should these be added as known features to avoid using the target specification file? Or perhaps as dedicated flags like GCC & Clang's -mharden-sls=all?