Auto merge of #4626 - phansch:restore_test, r=<try>

Revert "Remove tests that only ICE on CI"

This reverts commit 4318854.

If the integration tests pass, this closes #4607

Author: bors

tests/ui/out_of_bounds_indexing/empty_array.rs

@@ -0,0 +1,19 @@
+#![warn(clippy::out_of_bounds_indexing)]
+#![allow(clippy::no_effect, clippy::unnecessary_operation, const_err)]
+
+fn main() {
+    let empty: [i8; 0] = [];
+    empty[0];
+    &empty[1..5];
+    &empty[0..=4];
+    &empty[..=4];
+    &empty[1..];
+    &empty[..4];
+    &empty[0..=0];
+    &empty[..=0];
+
+    &empty[0..]; // Ok, should not produce stderr.
+    &empty[0..0]; // Ok, should not produce stderr.
+    &empty[..0]; // Ok, should not produce stderr.
+    &empty[..]; // Ok, should not produce stderr.
+}

tests/ui/out_of_bounds_indexing/empty_array.stderr

@@ -0,0 +1,46 @@
+error: range is out of bounds
+  --> $DIR/empty_array.rs:7:12
+   |
+LL |     &empty[1..5];
+   |            ^
+   |
+   = note: `-D clippy::out-of-bounds-indexing` implied by `-D warnings`
+
+error: range is out of bounds
+  --> $DIR/empty_array.rs:8:16
+   |
+LL |     &empty[0..=4];
+   |                ^
+
+error: range is out of bounds
+  --> $DIR/empty_array.rs:9:15
+   |
+LL |     &empty[..=4];
+   |               ^
+
+error: range is out of bounds
+  --> $DIR/empty_array.rs:10:12
+   |
+LL |     &empty[1..];
+   |            ^
+
+error: range is out of bounds
+  --> $DIR/empty_array.rs:11:14
+   |
+LL |     &empty[..4];
+   |              ^
+
+error: range is out of bounds
+  --> $DIR/empty_array.rs:12:16
+   |
+LL |     &empty[0..=0];
+   |                ^
+
+error: range is out of bounds
+  --> $DIR/empty_array.rs:13:15
+   |
+LL |     &empty[..=0];
+   |               ^
+
+error: aborting due to 7 previous errors
+