python: Update function declaration for the log callback

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/_pakfire/ctx.c b/src/_pakfire/ctx.c
index 8de9dd1abb269c874064ef732608a1401f5b2298..3da74ee0cfeceebf3eb27918a81233be7cf547c6 100644 (file)
--- a/src/_pakfire/ctx.c
+++ b/src/_pakfire/ctx.c
@@ -34,6 +34,9 @@ static PyObject* Ctx_new(PyTypeObject* type, PyObject* args, PyObject* kwds) {
        return (PyObject *)self;
 }
 
+static void Ctx_log_callback(void* data, int level, const char* file, int line,
+       const char* fn, const char* format, va_list args) __attribute__((format(printf, 6, 0)));
+
 static void Ctx_log_callback(void* data, int level, const char* file, int line,
                const char* fn, const char* format, va_list args) {
        PyObject* logger = (PyObject*)data;