Move /src/test to /tests

tests/ui/consts/const-eval/const-eval-overflow-4.rs

@@ -0,0 +1,21 @@
+// Evaluation of constants in array-elem count goes through different
+// compiler control-flow paths.
+//
+// This test is checking the count in an array type.
+
+#![allow(unused_imports)]
+
+use std::fmt;
+
+const A_I8_T
+    : [u32; (i8::MAX as i8 + 1i8) as usize]
+    //~^ ERROR evaluation of constant value failed
+    = [0; (i8::MAX as usize) + 1];
+
+fn main() {
+    foo(&A_I8_T[..]);
+}
+
+fn foo<T:fmt::Debug>(x: T) {
+    println!("{:?}", x);
+}