X-Git-Url: https://ruderich.org/simon/gitweb/?p=coloredstderr%2Fcoloredstderr.git;a=blobdiff_plain;f=src%2Fdebug.h;h=5e5cc6d937ef55e7e73de1f62310183daa40bb8a;hp=4a7c00bc107949f2a9ab5b7aaea3c3c1452a429e;hb=f30dbbd26d18e3014762ccc37b8e5ab65b596b35;hpb=e5a94fa847f4d880eb42f53bd93131ccf9fabe03

diff --git a/src/debug.h b/src/debug.h
index 4a7c00b..5e5cc6d 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -24,8 +24,10 @@ static void debug_write(int fd, int first_call, char const *format, va_list ap)
     char buffer[1024];
 
     int written = vsnprintf(buffer, sizeof(buffer), format, ap);
+    if (written < 0) {
+        return; /* shouldn't happen */
     /* Overflow. */
-    if ((size_t)written >= sizeof(buffer)) {
+    } else if ((size_t)written >= sizeof(buffer)) {
         written = sizeof(buffer) - 1;
     }