From b576abd2cc9f854653607dc1a05b51a215b08fa5 Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Wed, 22 Feb 2017 12:02:41 -0500
Subject: detect "bootstrap outputs" when serializing the dep-graph

Fixes #39828.
---
 .../incremental/issue-39828/auxiliary/generic.rs   | 18 ++++++++++++++++++
 src/test/incremental/issue-39828/issue-39828.rs    | 22 ++++++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 src/test/incremental/issue-39828/auxiliary/generic.rs
 create mode 100644 src/test/incremental/issue-39828/issue-39828.rs

(limited to 'src/test')

diff --git a/src/test/incremental/issue-39828/auxiliary/generic.rs b/src/test/incremental/issue-39828/auxiliary/generic.rs
new file mode 100644
index 00000000000..a562eab1768
--- /dev/null
+++ b/src/test/incremental/issue-39828/auxiliary/generic.rs
@@ -0,0 +1,18 @@
+// 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
+// compile-flags: -Z query-dep-graph
+
+#![rustc_partition_reused(module="__rustc_fallback_codegen_unit", cfg="rpass2")]
+#![feature(rustc_attrs)]
+
+#![crate_type="rlib"]
+pub fn foo<T>() { }
diff --git a/src/test/incremental/issue-39828/issue-39828.rs b/src/test/incremental/issue-39828/issue-39828.rs
new file mode 100644
index 00000000000..c729380bd5a
--- /dev/null
+++ b/src/test/incremental/issue-39828/issue-39828.rs
@@ -0,0 +1,22 @@
+// 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.
+
+// Regression test for #39828. If you make use of a module that
+// consists only of generics, no code is generated, just a dummy
+// module. The reduced graph consists of a single node (for that
+// module) with no inputs. Since we only serialize edges, when we
+// reload, we would consider that node dirty since it is not recreated
+// (it is not the target of any edges).
+
+// revisions:rpass1 rpass2
+// aux-build:generic.rs
+
+extern crate generic;
+fn main() { }
-- 
cgit 1.4.1-3-g733a5