Stop unloading syntax libraries

Externally loaded libraries are able to do things that cause references
to them to survive past the expansion phase (e.g. creating @-box cycles,
launching a task or storing something in task local data). As such, the
library has to stay loaded for the lifetime of the process.

2 files changed, 56 insertions, 0 deletions

diff --git a/src/test/auxiliary/macro_crate_outlive_expansion_phase.rs b/src/test/auxiliary/macro_crate_outlive_expansion_phase.rs
new file mode 100644
index 00000000000..eecbb325630
--- /dev/null
+++ b/src/test/auxiliary/macro_crate_outlive_expansion_phase.rs
@@ -0,0 +1,35 @@
+// 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.
+
+// force-host
+
+#[feature(macro_registrar)];
+
+extern mod syntax;
+
+use std::any::Any;
+use std::local_data;
+use syntax::ast::Name;
+use syntax::ext::base::SyntaxExtension;
+
+struct Foo {
+    foo: int
+}
+
+impl Drop for Foo {
+    fn drop(&mut self) {}
+}
+
+#[macro_registrar]
+pub fn registrar(_: |Name, SyntaxExtension|) {
+    local_data_key!(foo: ~Any);
+    local_data::set(foo, ~Foo { foo: 10 } as ~Any);
+}
+
diff --git a/src/test/run-pass-fulldeps/macro-crate-outlive-expansion-phase.rs b/src/test/run-pass-fulldeps/macro-crate-outlive-expansion-phase.rs
new file mode 100644
index 00000000000..a71cc465e88
--- /dev/null
+++ b/src/test/run-pass-fulldeps/macro-crate-outlive-expansion-phase.rs
@@ -0,0 +1,21 @@
+// 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.
+
+// aux-build:macro_crate_outlive_expansion_phase.rs
+// ignore-stage1
+// ignore-fast
+// ignore-android
+
+#[feature(phase)];
+
+#[phase(syntax)]
+extern mod macro_crate_outlive_expansion_phase;
+
+pub fn main() {}