no need to go unsafe lol

MikailBag · MikailBag · commit 69421114a982 · 2020-10-11T00:57:35.000+03:00
diff --git a/library/core/src/array/mod.rs b/library/core/src/array/mod.rs
@@ -400,10 +400,7 @@ mod default_impls {
         [T; N]: ArrayDefault,
     {
         fn default() -> [T; N] {
-            assert_eq!(crate::mem::size_of::<[(); N]>(), 0);
-            // SAFETY: it is always valid to use `zeroed` for zero-sized value.
-            let arr: [(); N] = unsafe { crate::mem::zeroed() };
-            arr.map(|_unit| DefaultHack::default_hack())
+            [(); N].map(|_unit| DefaultHack::default_hack())
         }
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -400,10 +400,7 @@ mod default_impls {`
`400`	`400`	`[T; N]: ArrayDefault,`
`401`	`401`	`{`
`402`	`402`	`fn default() -> [T; N] {`
`403`		`- assert_eq!(crate::mem::size_of::<[(); N]>(), 0);`
`404`		- // SAFETY: it is always valid to use `zeroed` for zero-sized value.
`405`		`- let arr: [(); N] = unsafe { crate::mem::zeroed() };`
`406`		`- arr.map(\|_unit\| DefaultHack::default_hack())`
	`403`	`+ [(); N].map(\|_unit\| DefaultHack::default_hack())`
`407`	`404`	`}`
`408`	`405`	`}`
`409`	`406`	`}`