[RFC PATCH v2 1/2] qapi: Inline qmp_marshal_output() functions

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

In case we need to use QAPI types but no QAPI command / QAPI event
actually use them, the generated qmp_marshal_output() function will
trigger the compiler 'unused-function' warnings.
To prevent that, emit these functions inlined: the compiler will
ignore such unused functions.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
RFC: No clue about QAPI...
Tested with GCC. If the compiler is picky we could use the 'unused'
function attribute.
---
 scripts/qapi/commands.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/qapi/commands.py b/scripts/qapi/commands.py
index 0e13d510547..bbed776a909 100644
--- a/scripts/qapi/commands.py
+++ b/scripts/qapi/commands.py
@@ -91,8 +91,8 @@ def gen_call(name: str,
 def gen_marshal_output(ret_type: QAPISchemaType) -> str:
     return mcgen('''
 
-static void qmp_marshal_output_%(c_name)s(%(c_type)s ret_in,
-                                QObject **ret_out, Error **errp)
+static inline void qmp_marshal_output_%(c_name)s(%(c_type)s ret_in,
+                                        QObject **ret_out, Error **errp)
 {
     Visitor *v;
 
-- 
2.31.1