tests: Move run-pass tests without naming conflicts to ui

src/test/ui/array-slice-vec/slice-panic-1.rs

@@ -0,0 +1,26 @@
+// run-pass
+
+// ignore-emscripten no threads support
+
+// Test that if a slicing expr[..] fails, the correct cleanups happen.
+
+
+use std::thread;
+
+struct Foo;
+
+static mut DTOR_COUNT: isize = 0;
+
+impl Drop for Foo {
+    fn drop(&mut self) { unsafe { DTOR_COUNT += 1; } }
+}
+
+fn foo() {
+    let x: &[_] = &[Foo, Foo];
+    &x[3..4];
+}
+
+fn main() {
+    let _ = thread::spawn(move|| foo()).join();
+    unsafe { assert_eq!(DTOR_COUNT, 2); }
+}