1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/compile-fail/while-bypass.rs b/src/test/compile-fail/while-bypass.rs
new file mode 100644
index 00000000..1de89e90
--- /dev/null
+++ b/src/test/compile-fail/while-bypass.rs
@@ -0,0 +1,13 @@
+// error-pattern: precondition constraint
+
+fn f() -> int {
+  let int x;
+  while(true) {
+    x = 10;
+  }
+  ret x;
+}
+
+fn main() {
+  f();
+}