codegen: Don't leak GLib.Value when implicitly unboxing it

Found by -fsanitize=address

1 files changed, 11 insertions, 0 deletions

diff --git a/codegen/valagvaluemodule.vala b/codegen/valagvaluemodule.vala
index 0429085e6..f13022c26 100644
--- a/codegen/valagvaluemodule.vala
+++ b/codegen/valagvaluemodule.vala
@@ -44,6 +44,17 @@ public class Vala.GValueModule : GAsyncModule {
 		}
 		ccall.add_argument (gvalue);
 
+		if (value_type.is_disposable ()) {
+			var temp_var = get_temp_variable (value_type, true, expr, false);
+			emit_temp_var (temp_var);
+			var temp_ref = get_variable_cexpression (temp_var.name);
+			ccode.add_assignment (temp_ref, get_cvalue (expr.inner));
+
+			// value needs to be kept alive until the end of this block
+			assert (current_symbol is Block);
+			((Block) current_symbol).add_local_variable (temp_var);
+		}
+
 		CCodeExpression rv;
 		if (target_type is ArrayType) {
 			var temp_var = get_temp_variable (target_type, true, expr, false);