error: floating-point types cannot be used in patterns
  --> $DIR/issue-6804.rs:21:9
   |
LL |         NAN => {}, //~ ERROR floating-point types cannot be used
   |         ^^^
   |
note: lint level defined here
  --> $DIR/issue-6804.rs:14:9
   |
LL | #![deny(illegal_floating_point_literal_pattern)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = 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: floating-point types cannot be used in patterns
  --> $DIR/issue-6804.rs:27:10
   |
LL |         [NAN, _] => {}, //~ ERROR floating-point types cannot be used
   |          ^^^
   |
   = 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