cc-wrapper: ensure NIX_HARDENING_ENABLE fortify3 implies fortify too
#253194
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even if fortify3 is in hardening_unsupported_flags
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This pull request has been mentioned on NixOS Discourse. There might be relevant details there: https://discourse.nixos.org/t/prs-ready-for-review/3032/2705 |
ghost
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Oct 23, 2023
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Description of changes
i.e. even if
fortify3is inhardening_unsupported_flagsThis fixes a rather obscure piece of behaviour that probably wouldn't have been noticed by anything other than my hardening flag test suite (see #253186).
But it makes the clang and gcc paths behave ever so slightly differently due to clang being marked with
hardeningUnsupportedFlags = [ "fortify3" ];. It currently has the effect of also disablingfortifyif onlyfortify3is mentioned inNIX_HARDENING_ENABLEfor some reason, and I think most people would find that behaviour surprising.Things done
sandbox = trueset innix.conf? (See Nix manual)nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage./result/bin/)