protect on null retval

ffi_call does not protect against retval being NULL, resulting in a segfault.

https://bugzilla.gnome.org/show_bug.cgi?id=604472

diff --git a/girepository/ginvoke.c b/girepository/ginvoke.c
index 70d81f8..136860c 100644 (file)
--- a/girepository/ginvoke.c
+++ b/girepository/ginvoke.c
@@ -247,6 +247,7 @@ g_function_info_invoke (GIFunctionInfo *info,
   if (ffi_prep_cif (&cif, FFI_DEFAULT_ABI, n_invoke_args, rtype, atypes) != FFI_OK)
     goto out;
 
+  g_return_val_if_fail (return_value, FALSE);
   ffi_call (&cif, func, return_value, args);
 
   if (local_error)
@@ -435,6 +436,7 @@ gi_cclosure_marshal_generic (GClosure *closure,
   if (ffi_prep_cif (&cif, FFI_DEFAULT_ABI, n_args, rtype, atypes) != FFI_OK)
     return;
 
+  g_return_val_if_fail (rvalue, FALSE);
   ffi_call (&cif, marshal_data ? marshal_data : cc->callback, rvalue, args);
 
   if (return_gvalue && G_VALUE_TYPE (return_gvalue))