1 files changed, 5 insertions, 10 deletions

diff --git a/sway/config.c b/sway/config.c
index f5efa98a..8c8c148d 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -924,23 +924,18 @@ void config_add_swaynag_warning(char *fmt, ...) {
         if (config->reading && !config->validating) {
                 va_list args;
                 va_start(args, fmt);
-                size_t length = vsnprintf(NULL, 0, fmt, args) + 1;
+                char *str = vformat_str(fmt, args);
                 va_end(args);
-
-                char *temp = malloc(length + 1);
-                if (!temp) {
-                        sway_log(SWAY_ERROR, "Failed to allocate buffer for warning.");
+                if (str == NULL) {
                         return;
                 }
 
-                va_start(args, fmt);
-                vsnprintf(temp, length, fmt, args);
-                va_end(args);
-
                 swaynag_log(config->swaynag_command, &config->swaynag_config_errors,
                         "Warning on line %i (%s) '%s': %s",
                         config->current_config_line_number, config->current_config_path,
-                        config->current_config_line, temp);
+                        config->current_config_line, str);
+
+                free(str);
         }
 }