[vala/staging: 2/2] codegen: Properly null-out source on ownership-transfer of delegates

[Rico Tzschichholz <ricotz src gnome org>]

commit 084eb5422acca802003f1bf1120d7f6ec4222809
Author: Marvin W <git larma de>
Date:   Tue Mar 14 18:04:07 2017 +0100

    codegen: Properly null-out source on ownership-transfer of delegates

 codegen/valaccodebasemodule.vala        |    5 +++++
 tests/Makefile.am                       |    1 +
 tests/delegates/reference_transfer.vala |   14 ++++++++++++++
 3 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 16b5a01..410837a 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -5266,6 +5266,11 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                        if (target_destroy_notify != null) {
                                ccode.add_assignment (target_destroy_notify, new CCodeConstant ("NULL"));
                        }
+                       var target = get_delegate_target_cvalue (expr.inner.target_value);
+                       if (target != null) {
+                               ccode.add_assignment (target, new CCodeConstant ("NULL"));
+                       }
+                       ccode.add_assignment (get_cvalue (expr.inner), new CCodeConstant ("NULL"));
                } else if (expr.inner.value_type is ArrayType) {
                        var array_type = (ArrayType) expr.inner.value_type;
                        var glib_value = (GLibValue) expr.inner.target_value;
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 6a50505..426570c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -145,6 +145,7 @@ TESTS = \
        structs/bug775761.vala \
        structs/bug777194.vala \
        delegates/delegates.vala \
+       delegates/reference_transfer.vala \
        delegates/bug539166.vala \
        delegates/bug595610.vala \
        delegates/bug595639.vala \
diff --git a/tests/delegates/reference_transfer.vala b/tests/delegates/reference_transfer.vala
new file mode 100644
index 0000000..6aad6b1
--- /dev/null
+++ b/tests/delegates/reference_transfer.vala
@@ -0,0 +1,14 @@
+delegate void FooFunc ();
+
+class Foo {
+       FooFunc f;
+
+       public Foo (owned FooFunc d) {
+               f = (owned) d;
+               assert (d == null);
+       }
+}
+
+void main () {
+       var foo = new Foo (() => {});
+}