feat: implement va_*() functions

1 files changed, 6 insertions, 2 deletions

diff --git a/common.c b/common.c
index fcc0790..678065a 100644
--- a/common.c
+++ b/common.c
@@ -1,5 +1,9 @@
-void fatal_error(const char* msg) {
-    fprintf(stderr, "%s\n", msg);
+void fatal_error(const char* msg, ...) {
+    va_list args;
+    va_start(args, msg);
+    vfprintf(stderr, msg, args);
+    va_end(args);
+    fprintf(stderr, "\n");
     exit(1);
 }