error[E0080]: evaluation panicked: assertion failed: std::mem::size_of::() == 0 --> $DIR/const-expr-generic-err.rs:4:21 | LL | const { assert!(std::mem::size_of::() == 0); } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `foo::::{constant#0}` failed here note: erroneous constant encountered --> $DIR/const-expr-generic-err.rs:4:5 | LL | const { assert!(std::mem::size_of::() == 0); } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ note: the above error was encountered while instantiating `fn foo::` --> $DIR/const-expr-generic-err.rs:12:5 | LL | foo::(); | ^^^^^^^^^^^^ error[E0080]: attempt to compute `0_usize - 1_usize`, which would overflow --> $DIR/const-expr-generic-err.rs:8:13 | LL | const { N - 1 } | ^^^^^ evaluation of `bar::<0>::{constant#0}` failed here note: erroneous constant encountered --> $DIR/const-expr-generic-err.rs:8:5 | LL | const { N - 1 } | ^^^^^^^^^^^^^^^ note: erroneous constant encountered --> $DIR/const-expr-generic-err.rs:8:5 | LL | const { N - 1 } | ^^^^^^^^^^^^^^^ | = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` note: the above error was encountered while instantiating `fn bar::<0>` --> $DIR/const-expr-generic-err.rs:13:5 | LL | bar::<0>(); | ^^^^^^^^^^ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0080`.