error: floating-point types cannot be used in patterns
  --> $DIR/issue-6804.rs:11:9
   |
LL |         NAN => {},
   |         ^^^
   |
   = 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 #41620 <https://github.com/rust-lang/rust/issues/41620>
note: the lint level is defined here
  --> $DIR/issue-6804.rs:4:9
   |
LL | #![deny(illegal_floating_point_literal_pattern)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: floating-point types cannot be used in patterns
  --> $DIR/issue-6804.rs:17:10
   |
LL |         [NAN, _] => {},
   |          ^^^
   |
   = 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 #41620 <https://github.com/rust-lang/rust/issues/41620>

error: aborting due to 2 previous errors