[glib/glib-2-60: 2/3] glib-genmarshal: Avoid a string copy for static string valist arguments

[Emmanuele Bassi <ebassi src gnome org>]

commit 804ce8b70363aca50f99587bee75ece2e2b86d77
Author: Philip Withnall <withnall endlessm com>
Date:   Sat Jun 8 00:24:37 2019 +0100

    glib-genmarshal: Avoid a string copy for static string valist arguments
    
    When building a valist marshaller, we can avoid a string copy if the
    argument is known to always be static. The marshaller we ship in
    `gmarshal.c` got this right, but marshallers generated by
    glib-genmarshal were missing the optimisation. Fix that.
    
    Backported version of !904 does not include the unit test. The version
    of this on `master` includes a unit test.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    Fixes: #1792

 gobject/glib-genmarshal.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gobject/glib-genmarshal.in b/gobject/glib-genmarshal.in
index f17e05532..1ea2ad9e8 100755
--- a/gobject/glib-genmarshal.in
+++ b/gobject/glib-genmarshal.in
@@ -330,6 +330,7 @@ IN_ARGS = {
         'ctype': 'gpointer',
         'getter': 'g_marshal_value_peek_string',
         'box': ['g_strdup', 'g_free'],
+        'static-check': True,
     },
     'PARAM': {
         'signal': 'PARAM',