rustdoc: Don't generate empty files for stripped items

We need to traverse stripped modules to generate redirect pages, but we shouldn't generate
anything else for them.

This now renders the file contents to a Vec before writing it to a file in one go. I think
that's probably a better strategy anyway.

1 files changed, 22 insertions, 0 deletions

diff --git a/src/test/rustdoc/issue-34025.rs b/src/test/rustdoc/issue-34025.rs
new file mode 100644
index 00000000000..8c0a7703c91
--- /dev/null
+++ b/src/test/rustdoc/issue-34025.rs
@@ -0,0 +1,22 @@
+// 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.
+
+#![crate_name = "foo"]
+
+// @!has 'foo/sys/index.html'
+// @!has 'foo/sys/sidebar-items.js'
+#[doc(hidden)]
+pub mod sys {
+    extern "C" {
+        // @!has 'foo/sys/fn.foo.html'
+        #[doc(hidden)]
+        pub fn foo();
+    }
+}