1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/lto/auxiliary/thinlto-dylib.rs b/src/test/ui/lto/auxiliary/thinlto-dylib.rs
new file mode 100644
index 000000000..9d17c35da
--- /dev/null
+++ b/src/test/ui/lto/auxiliary/thinlto-dylib.rs
@@ -0,0 +1,23 @@
+// Auxiliary crate for test issue-105637: the LTOed dylib which had duplicate symbols from libstd,
+// breaking the panic hook feature.
+//
+// This simulates the `rustc_driver` crate, and the main crate simulates rustc's main binary hooking
+// into this driver.
+
+// compile-flags: -Zdylib-lto -C lto=thin
+
+use std::panic;
+
+pub fn main() {
+    // Install the hook we want to see executed
+    panic::set_hook(Box::new(|_| {
+        eprintln!("LTOed auxiliary crate panic hook");
+    }));
+
+    // Trigger the panic hook with an ICE
+    run_compiler();
+}
+
+fn run_compiler() {
+    panic!("ICEing");
+}