ICH: Add test case sensitive to function bodies in metadata.

Author: michaelwoerister

src/test/incremental/hashes/exported_vs_not.rs

@@ -0,0 +1,86 @@
+// Copyright 2016 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.
+
+// must-compile-successfully
+// revisions: cfail1 cfail2 cfail3
+// compile-flags: -Z query-dep-graph
+
+#![allow(warnings)]
+#![feature(rustc_attrs)]
+#![crate_type="rlib"]
+
+// Case 1: The function body is not exported to metadata. If the body changes,
+//         the hash of the HirBody node should change, but not the hash of
+//         either the Hir or the Metadata node.
+
+#[cfg(cfail1)]
+pub fn body_not_exported_to_metadata() -> u32 {
+    1
+}
+
+#[cfg(not(cfail1))]
+#[rustc_clean(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_dirty(label="HirBody", cfg="cfail2")]
+#[rustc_clean(label="HirBody", cfg="cfail3")]
+#[rustc_metadata_clean(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn body_not_exported_to_metadata() -> u32 {
+    2
+}
+
+
+
+// Case 2: The function body *is* exported to metadata because the function is
+//         marked as #[inline]. Only the hash of the Hir depnode should be
+//         unaffected by a change to the body.
+
+#[cfg(cfail1)]
+#[inline]
+pub fn body_exported_to_metadata_because_of_inline() -> u32 {
+    1
+}
+
+#[cfg(not(cfail1))]
+#[rustc_clean(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_dirty(label="HirBody", cfg="cfail2")]
+#[rustc_clean(label="HirBody", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+#[inline]
+pub fn body_exported_to_metadata_because_of_inline() -> u32 {
+    2
+}
+
+
+
+// Case 2: The function body *is* exported to metadata because the function is
+//         generic. Only the hash of the Hir depnode should be
+//         unaffected by a change to the body.
+
+#[cfg(cfail1)]
+#[inline]
+pub fn body_exported_to_metadata_because_of_generic() -> u32 {
+    1
+}
+
+#[cfg(not(cfail1))]
+#[rustc_clean(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_dirty(label="HirBody", cfg="cfail2")]
+#[rustc_clean(label="HirBody", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+#[inline]
+pub fn body_exported_to_metadata_because_of_generic() -> u32 {
+    2
+}
+