add lint when comparing floats in an array

Finishes #4277
rust-lang · Aug 27, 2019 · dc53b28 · dc53b28
1 parent c3e9136
commit dc53b28
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/clippy_lints/src/misc.rs b/clippy_lints/src/misc.rs
@@ -519,7 +519,9 @@ fn is_signum(cx: &LateContext<'_, '_>, expr: &Expr) -> bool {
 }
 
 fn is_float(cx: &LateContext<'_, '_>, expr: &Expr) -> bool {
-    matches!(walk_ptrs_ty(cx.tables.expr_ty(expr)).sty, ty::Float(_))
+    let value = &walk_ptrs_ty(cx.tables.expr_ty(expr)).sty;
+
+    matches!(value, ty::Array(arr_ty, _)) && matches!(value, ty::Float(_)) || matches!(value, ty::Float(_))
 }
 
 fn check_to_owned(cx: &LateContext<'_, '_>, expr: &Expr, other: &Expr) {