Test that TLS access works outside of the dylib it's defined in

3 files changed, 49 insertions, 0 deletions

diff --git a/tests/ui/thread-local/auxiliary/tls-export.rs b/tests/ui/thread-local/auxiliary/tls-export.rs
new file mode 100644
index 00000000000..aab48f871c9
--- /dev/null
+++ b/tests/ui/thread-local/auxiliary/tls-export.rs
@@ -0,0 +1,16 @@
+#![crate_type = "dylib"]
+#![feature(thread_local)]
+#![feature(cfg_target_thread_local)]
+#![cfg(target_thread_local)]
+
+extern crate tls_rlib;
+
+pub use tls_rlib::*;
+
+#[thread_local]
+pub static FOO: bool = true;
+
+#[inline(never)]
+pub fn foo_addr() -> usize {
+    &FOO as *const bool as usize
+}
diff --git a/tests/ui/thread-local/auxiliary/tls-rlib.rs b/tests/ui/thread-local/auxiliary/tls-rlib.rs
new file mode 100644
index 00000000000..0fbcf387b5f
--- /dev/null
+++ b/tests/ui/thread-local/auxiliary/tls-rlib.rs
@@ -0,0 +1,14 @@
+// no-prefer-dynamic
+
+#![crate_type = "rlib"]
+#![feature(thread_local)]
+#![feature(cfg_target_thread_local)]
+#![cfg(target_thread_local)]
+
+#[thread_local]
+pub static BAR: bool = true;
+
+#[inline(never)]
+pub fn bar_addr() -> usize {
+    &BAR as *const bool as usize
+}
diff --git a/tests/ui/thread-local/tls-dylib-access.rs b/tests/ui/thread-local/tls-dylib-access.rs
new file mode 100644
index 00000000000..12c46113cea
--- /dev/null
+++ b/tests/ui/thread-local/tls-dylib-access.rs
@@ -0,0 +1,19 @@
+// aux-build: tls-rlib.rs
+// aux-build: tls-export.rs
+// run-pass
+
+#![feature(cfg_target_thread_local)]
+
+#[cfg(target_thread_local)]
+extern crate tls_export;
+
+fn main() {
+    #[cfg(target_thread_local)]
+    {
+        // Check that we get the real address of the `FOO` TLS in the dylib
+        assert_eq!(&tls_export::FOO as *const bool as usize, tls_export::foo_addr());
+
+        // Check that we get the real address of the `BAR` TLS in the rlib linked into the dylib
+        assert_eq!(&tls_export::BAR as *const bool as usize, tls_export::bar_addr());
+    }
+}