error: generic parameters may not be used in const operations
  --> $DIR/issue-76701-ty-param-in-const.rs:1:46
   |
LL | fn ty_param<T>() -> [u8; std::mem::size_of::<T>()] {
   |                                              ^ 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/issue-76701-ty-param-in-const.rs:6:42
   |
LL | fn const_param<const N: usize>() -> [u8; N + 1] {
   |                                          ^ cannot perform const operation using `N`
   |
   = help: const parameters may only be used as standalone arguments, i.e. `N`
   = help: use `#![feature(generic_const_exprs)]` to allow generic const expressions

error: aborting due to 2 previous errors