error: functions in `extern` blocks cannot have `const` qualifier --> $DIR/no-const-fn-in-extern-block.rs:2:5 | LL | extern "C" { | ---------- in this `extern` block LL | const fn foo(); | ^^^^^ help: remove the `const` qualifier error: functions in `extern` blocks cannot have `const` qualifier --> $DIR/no-const-fn-in-extern-block.rs:4:5 | LL | extern "C" { | ---------- in this `extern` block ... LL | const unsafe fn bar(); | ^^^^^ help: remove the `const` qualifier error: items in `extern` blocks without an `unsafe` qualifier cannot have safety qualifiers --> $DIR/no-const-fn-in-extern-block.rs:4:5 | LL | const unsafe fn bar(); | ^^^^^^^^^^^^^^^^^^^^^^ | help: add `unsafe` to this `extern` block | LL | unsafe extern "C" { | ++++++ error: aborting due to 3 previous errors