error: generic parameters may not be used in const operations --> $DIR/dependence_lint.rs:14:32 | LL | let _: [u8; size_of::<*mut T>()]; // error on stable, error with gce | ^ cannot perform const operation using `T` | = note: type parameters may not be used in const expressions = help: use `#![feature(generic_const_exprs)]` to allow generic const expressions error: generic parameters may not be used in const operations --> $DIR/dependence_lint.rs:21:37 | LL | let _: [u8; if true { size_of::() } else { 3 }]; // error on stable, error with gce | ^ cannot perform const operation using `T` | = note: type parameters may not be used in const expressions = help: use `#![feature(generic_const_exprs)]` to allow generic const expressions warning: cannot use constants which depend on generic parameters in types --> $DIR/dependence_lint.rs:10:9 | LL | [0; size_of::<*mut T>()]; // lint on stable, error with `generic_const_exprs` | ^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #76200 = note: `#[warn(const_evaluatable_unchecked)]` on by default warning: cannot use constants which depend on generic parameters in types --> $DIR/dependence_lint.rs:17:9 | LL | [0; if false { size_of::() } else { 3 }]; // lint on stable, error with gce | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #76200 error: aborting due to 2 previous errors; 2 warnings emitted