From bcbb9d9acb43f5b3f1ffe665f9c66d9931e1cc01 Mon Sep 17 00:00:00 2001
From: Marcin Serwin <toxyxer@gmail.com>
Date: Fri, 20 Mar 2020 10:40:44 +0100
Subject: [PATCH] Allow for const arrays of zeros

---
 clippy_lints/src/misc.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/clippy_lints/src/misc.rs b/clippy_lints/src/misc.rs
index d4a74a6b4515..50d0830757db 100644
--- a/clippy_lints/src/misc.rs
+++ b/clippy_lints/src/misc.rs
@@ -475,6 +475,11 @@ fn is_allowed<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr<'_>) -> boo
     match constant(cx, cx.tables, expr) {
         Some((Constant::F32(f), _)) => f == 0.0 || f.is_infinite(),
         Some((Constant::F64(f), _)) => f == 0.0 || f.is_infinite(),
+        Some((Constant::Vec(vec), _)) => vec.iter().all(|f| match f {
+            Constant::F32(f) => *f == 0.0 || (*f).is_infinite(),
+            Constant::F64(f) => *f == 0.0 || (*f).is_infinite(),
+            _ => false,
+        }),
         _ => false,
     }
 }