Uplift excessive_precision to the correctness category

clippy_lints/src/excessive_precision.rs

@@ -22,15 +22,15 @@ declare_clippy_lint! {
     ///
     /// ```rust
     /// // Bad
-    /// let v: f32 = 0.123_456_789_9;
-    /// println!("{}", v); //  0.123_456_789
+    /// let a: f32 = 0.123_456_789_9; // 0.123_456_789
+    /// let b: f32 = 16_777_217.0; // 16_777_216.0
     ///
     /// // Good
-    /// let v: f64 = 0.123_456_789_9;
-    /// println!("{}", v); //  0.123_456_789_9
+    /// let a: f64 = 0.123_456_789_9;
+    /// let b: f64 = 16_777_216.0;
     /// ```
     pub EXCESSIVE_PRECISION,
-    style,
+    correctness,
     "excessive precision for float literal"
 }
 

clippy_lints/src/lib.rs

@@ -1386,7 +1386,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&enum_variants::MODULE_INCEPTION),
         LintId::of(&eq_op::OP_REF),
         LintId::of(&eta_reduction::REDUNDANT_CLOSURE),
-        LintId::of(&excessive_precision::EXCESSIVE_PRECISION),
         LintId::of(&formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING),
         LintId::of(&formatting::SUSPICIOUS_ELSE_FORMATTING),
         LintId::of(&formatting::SUSPICIOUS_UNARY_OP_FORMATTING),
@@ -1567,6 +1566,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT),
         LintId::of(&eq_op::EQ_OP),
         LintId::of(&erasing_op::ERASING_OP),
+        LintId::of(&excessive_precision::EXCESSIVE_PRECISION),
         LintId::of(&formatting::POSSIBLE_MISSING_COMMA),
         LintId::of(&functions::NOT_UNSAFE_PTR_ARG_DEREF),
         LintId::of(&indexing_slicing::OUT_OF_BOUNDS_INDEXING),

src/lintlist/mod.rs

@@ -492,7 +492,7 @@ pub const ALL_LINTS: [Lint; 355] = [
     },
     Lint {
         name: "excessive_precision",
-        group: "style",
+        group: "correctness",
         desc: "excessive precision for float literal",
         deprecation: None,
         module: "excessive_precision",