From a1fb3915f562428741324ac5b319d9316fb57231 Mon Sep 17 00:00:00 2001
From: Nemanja Boric <4burgos@gmail.com>
Date: Sat, 13 May 2017 11:36:31 +0200
Subject: [PATCH] Fix issue 9275: Add test for removeRoot

Issue 9275 describes the runtime crashing on the
invalid pointer passed to removeRoot, instead of
documented no-op.

This has been fixed in the meantime, so unittest
is added as a guarantee that it stays so.
---
 src/gc/impl/conservative/gc.d | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/gc/impl/conservative/gc.d b/src/gc/impl/conservative/gc.d
index fe1ca5f858..10726554a0 100644
--- a/src/gc/impl/conservative/gc.d
+++ b/src/gc/impl/conservative/gc.d
@@ -3368,3 +3368,12 @@ unittest
     assert(thrown);
 */
 }
+
+unittest
+{
+    import core.memory;
+
+    // https://issues.dlang.org/show_bug.cgi?id=9275
+    GC.removeRoot(null);
+    GC.removeRoot(cast(void*)13);
+}