From: Simon Ruderich <simon@ruderich.org>
Date: Mon, 3 Jun 2013 02:32:12 +0000 (+0200)
Subject: debug.h: Handle overflow in debug().
X-Git-Tag: 0.1~119
X-Git-Url: https://ruderich.org/simon/gitweb/?p=coloredstderr%2Fcoloredstderr.git;a=commitdiff_plain;h=66fb589680db241e916b7f7f43d9e6058dcdb571

debug.h: Handle overflow in debug().
---

diff --git a/src/debug.h b/src/debug.h
index 6456898..4dab03c 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -33,6 +33,10 @@ static void debug(const char *format, ...) {
     va_start(ap, format);
     int written = vsnprintf(buffer, sizeof(buffer), format, ap);
     va_end(ap);
+    /* Overflow. */
+    if ((size_t)written >= sizeof(buffer)) {
+        written = sizeof(buffer) - 1;
+    }
 
     /* Make sure these functions are loaded. */
     DLSYM_FUNCTION(real_write, "write");