From: Fabian Keil <fk@fabiankeil.de>
Date: Tue, 9 Sep 2025 11:57:44 +0000 (+0200)
Subject: log_error(): Fix segmentation fault
X-Git-Url: http://www.privoxy.org/gitweb/%22https:/@default-cgi@/faq/%3C/static/easr?a=commitdiff_plain;h=5d4dcc9fbf0f5c06b7e147829b5be5fd27fc8a55;p=privoxy.git

log_error(): Fix segmentation fault

... when logging %E on a platform that isn't Windows
and doesn't have strerror().

Reported by Joshua Rogers.
---

diff --git a/errlog.c b/errlog.c
index da6af45e..a3fb3781 100644
--- a/errlog.c
+++ b/errlog.c
@@ -843,7 +843,7 @@ void log_error(int loglevel, const char *fmt, ...)
 #ifdef HAVE_STRERROR
             format_string = strerror(ival);
 #else /* ifndef HAVE_STRERROR */
-            format_string = NULL;
+            format_string = "Unable to convert errno to string.";
 #endif /* ndef HAVE_STRERROR */
             if (sval == NULL)
             {