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glib-genmarshal: Fix ref-sinking of GVariants in valist marshallers

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The old (Perl) implementation of glib-genmarshal used
g_variant_ref_sink() to correctly handle floating inputs; the Python
version should do the same.

Includes a unit test.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Fixes: #1793
This commit is contained in:
Philip Withnall 2019-06-08 00:10:07 +01:00
parent e34839f8f4
commit f044ddc1ee
2 changed files with 132 additions and 1 deletions
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2
gobject/glib-genmarshal.in
View File

@ -360,7 +360,7 @@ IN_ARGS = {
'signal': 'VARIANT', 'signal': 'VARIANT',
'ctype': 'gpointer', 'ctype': 'gpointer',
'getter': 'g_marshal_value_peek_variant', 'getter': 'g_marshal_value_peek_variant',
'box': ['g_variant_ref', 'g_variant_unref'], 'box': ['g_variant_ref_sink', 'g_variant_unref'],
'static-check': True, 'static-check': True,
'takes-type': False, 'takes-type': False,
}, },

131
gobject/tests/genmarshal.py
View File

@ -331,6 +331,137 @@ class TestGenmarshal(unittest.TestCase):
''').strip().format(**body_result.subs), ''').strip().format(**body_result.subs),
body_result.out.strip()) body_result.out.strip())
def test_void_variant_nostdinc_valist_marshaller(self):
"""Test running with a basic VOID:VARIANT list, but without the
standard marshallers, and with valist support enabled. This checks that
the valist marshaller for VARIANT correctly sinks floating variants.
See issue #1793.
"""
(header_result, body_result) = \
self.runGenmarshalWithList('VOID:VARIANT', '--quiet', '--nostdinc',
'--valist-marshaller')
self.assertEqual('', header_result.err)
self.assertEqual('', body_result.err)
self.assertEqual(dedent(
'''
/* {standard_top_comment} */
{standard_top_pragma}
G_BEGIN_DECLS
/* VOID:VARIANT ({list_path}:1) */
extern
void g_cclosure_user_marshal_VOID__VARIANT (GClosure *closure,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
extern
void g_cclosure_user_marshal_VOID__VARIANTv (GClosure *closure,
GValue *return_value,
gpointer instance,
va_list args,
gpointer marshal_data,
int n_params,
GType *param_types);
G_END_DECLS
{standard_bottom_pragma}
''').strip().format(**header_result.subs),
header_result.out.strip())
self.assertEqual(dedent(
'''
/* {standard_top_comment} */
{standard_marshal_peek_defines}
/* VOID:VARIANT ({list_path}:1) */
void
g_cclosure_user_marshal_VOID__VARIANT (GClosure *closure,
GValue *return_value G_GNUC_UNUSED,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint G_GNUC_UNUSED,
gpointer marshal_data)
{{
typedef void (*GMarshalFunc_VOID__VARIANT) (gpointer data1,
gpointer arg1,
gpointer data2);
GCClosure *cc = (GCClosure *) closure;
gpointer data1, data2;
GMarshalFunc_VOID__VARIANT callback;
g_return_if_fail (n_param_values == 2);
if (G_CCLOSURE_SWAP_DATA (closure))
{{
data1 = closure->data;
data2 = g_value_peek_pointer (param_values + 0);
}}
else
{{
data1 = g_value_peek_pointer (param_values + 0);
data2 = closure->data;
}}
callback = (GMarshalFunc_VOID__VARIANT) (marshal_data ? marshal_data : cc->callback);
callback (data1,
g_marshal_value_peek_variant (param_values + 1),
data2);
}}
void
g_cclosure_user_marshal_VOID__VARIANTv (GClosure *closure,
GValue *return_value G_GNUC_UNUSED,
gpointer instance,
va_list args,
gpointer marshal_data,
int n_params,
GType *param_types)
{{
typedef void (*GMarshalFunc_VOID__VARIANT) (gpointer data1,
gpointer arg1,
gpointer data2);
GCClosure *cc = (GCClosure *) closure;
gpointer data1, data2;
GMarshalFunc_VOID__VARIANT callback;
gpointer arg0;
va_list args_copy;
G_VA_COPY (args_copy, args);
arg0 = (gpointer) va_arg (args_copy, gpointer);
if ((param_types[0] & G_SIGNAL_TYPE_STATIC_SCOPE) == 0 && arg0 != NULL)
arg0 = g_variant_ref_sink (arg0);
va_end (args_copy);
if (G_CCLOSURE_SWAP_DATA (closure))
{{
data1 = closure->data;
data2 = instance;
}}
else
{{
data1 = instance;
data2 = closure->data;
}}
callback = (GMarshalFunc_VOID__VARIANT) (marshal_data ? marshal_data : cc->callback);
callback (data1,
arg0,
data2);
if ((param_types[0] & G_SIGNAL_TYPE_STATIC_SCOPE) == 0 && arg0 != NULL)
g_variant_unref (arg0);
}}
''').strip().format(**body_result.subs),
body_result.out.strip())
if __name__ == '__main__': if __name__ == '__main__':
unittest.main(testRunner=taptestrunner.TAPTestRunner()) unittest.main(testRunner=taptestrunner.TAPTestRunner())