Move /src/test to /tests

tests/ui/for-loop-while/loop-no-reinit-needed-post-bot.rs

@@ -0,0 +1,34 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+struct S;
+// Ensure S is moved, not copied, on assignment.
+impl Drop for S { fn drop(&mut self) { } }
+
+// user-defined function "returning" bottom (i.e., no return at all).
+fn my_panic() -> ! { loop {} }
+
+pub fn step(f: bool) {
+    let mut g = S;
+    let mut i = 0;
+    loop
+    {
+        if i > 10 { break; } else { i += 1; }
+
+        let _g = g;
+
+        if f {
+            // re-initialize g, but only before restarting loop.
+            g = S;
+            continue;
+        }
+
+        my_panic();
+
+        // we never get here, so we do not need to re-initialize g.
+    }
+}
+
+pub fn main() {
+    step(true);
+}