From ca983b5700f894c653758a4f93a758b93d025621 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Sun, 25 Jan 2026 12:36:01 +0100
Subject: c: GNU __attribute__ stubs

---
 io.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

(limited to 'io.c')

diff --git a/io.c b/io.c
index 9e7cba7..d98eacd 100644
--- a/io.c
+++ b/io.c
@@ -1100,12 +1100,13 @@ vdiag(const struct span *span, enum diagkind kind, const char *fmt, va_list ap)
 void _Noreturn
 fatal(const struct span *span, const char *fmt, ...)
 {
-   va_list ap;
-
-   va_start(ap, fmt);
-   vdiag(span, DGERROR, fmt, ap);
-   va_end(ap);
-   if (span) efmt("Aborting due to previous error.\n");
+   if (fmt) {
+      va_list ap;
+      va_start(ap, fmt);
+      vdiag(span, DGERROR, fmt, ap);
+      va_end(ap);
+   }
+   if (!fmt || span) efmt("Aborting due to previous error.\n");
    exit(1);
 }
 
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