add incremental test runner and some tests

1 files changed, 58 insertions, 0 deletions

diff --git a/src/test/incremental/string_constant.rs b/src/test/incremental/string_constant.rs
new file mode 100644
index 00000000000..1acca8b2952
--- /dev/null
+++ b/src/test/incremental/string_constant.rs
@@ -0,0 +1,58 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// revisions: rpass1 rpass2
+
+#![allow(warnings)]
+#![feature(rustc_attrs)]
+
+// Here the only thing which changes is the string constant in `x`.
+// Therefore, the compiler deduces (correctly) that typeck is not
+// needed even for callers of `x`.
+//
+// It is not entirely clear why `TransCrateItem` invalidates `y` and
+// `z`, actually, I think it's because of the structure of
+// trans. -nmatsakis
+
+fn main() { }
+
+mod x {
+    #[cfg(rpass1)]
+    pub fn x() {
+        println!("1");
+    }
+
+    #[cfg(rpass2)]
+    #[rustc_dirty(label="TypeckItemBody", cfg="rpass2")]
+    #[rustc_dirty(label="TransCrateItem", cfg="rpass2")]
+    pub fn x() {
+        println!("2");
+    }
+}
+
+mod y {
+    use x;
+
+    #[rustc_clean(label="TypeckItemBody", cfg="rpass2")]
+    #[rustc_dirty(label="TransCrateItem", cfg="rpass2")]
+    pub fn y() {
+        x::x();
+    }
+}
+
+mod z {
+    use y;
+
+    #[rustc_clean(label="TypeckItemBody", cfg="rpass2")]
+    #[rustc_dirty(label="TransCrateItem", cfg="rpass2")]
+    pub fn z() {
+        y::y();
+    }
+}