codegen: Fix C warning when passing lambda free functions

Fixes bug 663651.

diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 54238d7569711a9ed4d067cc6b0320fb5dc285a1..9d7395ed64f1698bafc0c17df59a1372f4d9e1c0 100644 (file)
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -1910,11 +1910,12 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                        cfile.add_function (ref_fun);
 
                        var unref_fun = new CCodeFunction ("block%d_data_unref".printf (block_id), "void");
-                       unref_fun.add_parameter (new CCodeParameter ("_data%d_".printf (block_id), struct_name + "*"));
+                       unref_fun.add_parameter (new CCodeParameter ("_userdata_", "void *"));
                        unref_fun.modifiers = CCodeModifiers.STATIC;
                        
                        push_function (unref_fun);
 
+                       ccode.add_declaration (struct_name + "*", new CCodeVariableDeclarator ("_data%d_".printf (block_id), new CCodeCastExpression (new CCodeIdentifier ("_userdata_"), struct_name + "*")));
                        ccall = new CCodeFunctionCall (new CCodeIdentifier ("g_atomic_int_dec_and_test"));
                        ccall.add_argument (new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, new CCodeMemberAccess.pointer (new CCodeIdentifier ("_data%d_".printf (block_id)), "_ref_count_")));
                        ccode.open_if (ccall);