Fix variadic forwarding in sway_assert

_sway_assert is a variadic function which tries
to delegate to another variadic function. This
requires a vprintf-style variant of the delegate.

https://stackoverflow.com/a/150616

1 files changed, 3 insertions, 0 deletions

diff --git a/include/log.h b/include/log.h
index 2c4150e4..60b3763b 100644
--- a/include/log.h
+++ b/include/log.h
@@ -28,6 +28,9 @@ void _sway_log(const char *filename, int line, log_importance_t verbosity, const
 #define sway_log(VERBOSITY, FMT, ...) \
         _sway_log(__FILE__, __LINE__, VERBOSITY, FMT, ##__VA_ARGS__)
 
+#define sway_vlog(VERBOSITY, FMT, VA_ARGS) \
+    _sway_vlog(__FILE__, __LINE__, VERBOSITY, FMT, VA_ARGS)
+
 void error_handler(int sig);
 
 #endif