Fix bug in matching on floating-point ranges

src/test/run-pass/array-slice-vec/vec-matching-autoslice.stderr

@@ -1,8 +0,0 @@
-warning: unreachable pattern
-  --> $DIR/vec-matching-autoslice.rs:31:9
-   |
-LL |         ([_, _], _) => panic!(),
-   |         ^^^^^^^^^^^
-   |
-   = note: #[warn(unreachable_patterns)] on by default
-

src/test/run-pass/binding/match-range.stderr

@@ -1,20 +0,0 @@
-warning: unreachable pattern
-  --> $DIR/match-range.rs:47:7
-   |
-LL |       _ => panic!("should match float range")
-   |       ^
-   |
-   = note: #[warn(unreachable_patterns)] on by default
-
-warning: unreachable pattern
-  --> $DIR/match-range.rs:55:9
-   |
-LL |         _ => {},
-   |         ^
-
-warning: unreachable pattern
-  --> $DIR/match-range.rs:59:9
-   |
-LL |         _ => panic!("should match the range start"),
-   |         ^
-

src/test/run-pass/issues/issue-15881-model-lexer-dotdotdot.stderr

@@ -1,8 +0,0 @@
-warning: unreachable pattern
-  --> $DIR/issue-15881-model-lexer-dotdotdot.rs:41:7
-   |
-LL |       _ => panic!("should match float range")
-   |       ^
-   |
-   = note: #[warn(unreachable_patterns)] on by default
-

src/test/run-pass/issues/issue-7222.stderr

@@ -1,8 +0,0 @@
-warning: unreachable pattern
-  --> $DIR/issue-7222.rs:20:9
-   |
-LL |         _ => ()
-   |         ^
-   |
-   = note: #[warn(unreachable_patterns)] on by default
-

src/test/ui/match/match-range-fail-dominate.stderr

@@ -62,11 +62,5 @@ error: unreachable pattern
 LL |       0.02f64 => {}
    |       ^^^^^^^
 
-error: unreachable pattern
-  --> $DIR/match-range-fail-dominate.rs:47:7
-   |
-LL |       _ => {}
-   |       ^
-
-error: aborting due to 6 previous errors
+error: aborting due to 5 previous errors
 

src/test/ui/non-exhaustive/non-exhaustive-float-range-match.rs

@@ -0,0 +1,13 @@
+#![allow(illegal_floating_point_literal_pattern)]
+#![deny(unreachable_patterns)]
+
+fn main() {
+    match 0.0 {
+      0.0..=1.0 => {}
+      _ => {} // ok
+    }
+
+    match 0.0 { //~ ERROR non-exhaustive patterns
+      0.0..=1.0 => {}
+    }
+}

src/test/ui/non-exhaustive/non-exhaustive-float-range-match.stderr

@@ -0,0 +1,9 @@
+error[E0004]: non-exhaustive patterns: `_` not covered
+  --> $DIR/non-exhaustive-float-range-match.rs:10:11
+   |
+LL |     match 0.0 { //~ ERROR non-exhaustive patterns
+   |           ^^^ pattern `_` not covered
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.