1 files changed, 256 insertions, 0 deletions
diff --git a/src/test/incremental/hashes/while_let_loops.rs b/src/test/incremental/hashes/while_let_loops.rs
new file mode 100644
index 00000000000..405645bd1b8
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+++ b/src/test/incremental/hashes/while_let_loops.rs
@@ -0,0 +1,256 @@
+// 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.
+
+
+// This test case tests the incremental compilation hash (ICH) implementation
+// for `while let` loops.
+
+// The general pattern followed here is: Change one thing between rev1 and rev2
+// and make sure that the hash has changed, then change nothing between rev2 and
+// rev3 and make sure that the hash has not changed.
+
+// must-compile-successfully
+// revisions: cfail1 cfail2 cfail3
+// compile-flags: -Z query-dep-graph
+
+#![allow(warnings)]
+#![feature(rustc_attrs)]
+#![crate_type="rlib"]
+
+
+// Change loop body ------------------------------------------------------------
+#[cfg(cfail1)]
+fn change_loop_body() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 1;
+        break;
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn change_loop_body() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 2;
+        break;
+    }
+}
+
+
+
+// Change loop body ------------------------------------------------------------
+#[cfg(cfail1)]
+fn change_loop_condition() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 1;
+        break;
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn change_loop_condition() {
+    let mut _x = 0;
+    while let Some(1u32) = None {
+        _x = 1;
+        break;
+    }
+}
+
+
+
+// Add break -------------------------------------------------------------------
+#[cfg(cfail1)]
+fn add_break() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 1;
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn add_break() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 1;
+        break;
+    }
+}
+
+
+
+// Add loop label --------------------------------------------------------------
+#[cfg(cfail1)]
+fn add_loop_label() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 1;
+        break;
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn add_loop_label() {
+    let mut _x = 0;
+    'label: while let Some(0u32) = None {
+        _x = 1;
+        break;
+    }
+}
+
+
+
+// Add loop label to break -----------------------------------------------------
+#[cfg(cfail1)]
+fn add_loop_label_to_break() {
+    let mut _x = 0;
+    'label: while let Some(0u32) = None {
+        _x = 1;
+        break;
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn add_loop_label_to_break() {
+    let mut _x = 0;
+    'label: while let Some(0u32) = None {
+        _x = 1;
+        break 'label;
+    }
+}
+
+
+
+// Change break label ----------------------------------------------------------
+#[cfg(cfail1)]
+fn change_break_label() {
+    let mut _x = 0;
+    'outer: while let Some(0u32) = None {
+        'inner: while let Some(0u32) = None {
+            _x = 1;
+            break 'inner;
+        }
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn change_break_label() {
+    let mut _x = 0;
+    'outer: while let Some(0u32) = None {
+        'inner: while let Some(0u32) = None {
+            _x = 1;
+            break 'outer;
+        }
+    }
+}
+
+
+
+// Add loop label to continue --------------------------------------------------
+#[cfg(cfail1)]
+fn add_loop_label_to_continue() {
+    let mut _x = 0;
+    'label: while let Some(0u32) = None {
+        _x = 1;
+        continue;
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn add_loop_label_to_continue() {
+    let mut _x = 0;
+    'label: while let Some(0u32) = None {
+        _x = 1;
+        continue 'label;
+    }
+}
+
+
+
+// Change continue label ----------------------------------------------------------
+#[cfg(cfail1)]
+fn change_continue_label() {
+    let mut _x = 0;
+    'outer: while let Some(0u32) = None {
+        'inner: while let Some(0u32) = None {
+            _x = 1;
+            continue 'inner;
+        }
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn change_continue_label() {
+    let mut _x = 0;
+    'outer: while let Some(0u32) = None {
+        'inner: while let Some(0u32) = None {
+            _x = 1;
+            continue 'outer;
+        }
+    }
+}
+
+
+
+// Change continue to break ----------------------------------------------------
+#[cfg(cfail1)]
+fn change_continue_to_break() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 1;
+        continue;
+    }
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+fn change_continue_to_break() {
+    let mut _x = 0;
+    while let Some(0u32) = None {
+        _x = 1;
+        break;
+    }
+}