1 files changed, 12 insertions, 0 deletions
diff --git a/src/test/ui/over-constrained-vregs.rs b/src/test/ui/over-constrained-vregs.rs
new file mode 100644
index 000000000..cc8081476
--- /dev/null
+++ b/src/test/ui/over-constrained-vregs.rs
@@ -0,0 +1,12 @@
+// run-pass
+
+#![allow(unused_must_use)]
+// Regression test for issue #152.
+pub fn main() {
+    let mut b: usize = 1_usize;
+    while b < std::mem::size_of::<usize>() {
+        0_usize << b;
+        b <<= 1_usize;
+        println!("{}", b);
+    }
+}