From: Stephan Bosch <stephan.bosch@open-xchange.com>
Date: Fri, 19 Dec 2025 03:02:14 +0000 (+0100)
Subject: lib: test-unicode-break - Fix potential crash on empty lines
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fec739bca688d14cd5188a345fcc9bef48d9ffd9;p=thirdparty%2Fdovecot%2Fcore.git

lib: test-unicode-break - Fix potential crash on empty lines
---

diff --git a/src/lib/test-unicode-break.c b/src/lib/test-unicode-break.c
index cd0428d4de..867d63ef7a 100644
--- a/src/lib/test-unicode-break.c
+++ b/src/lib/test-unicode-break.c
@@ -76,8 +76,10 @@ test_ucd_file(const char *file,
 		line_num++;
 
 		/* remove any trailing whitespace and comment */
+		if (*line == '\0')
+			continue;
 		char *end = strchr(line, '#');
-		if (end == NULL && *line != '\0')
+		if (end == NULL)
 			end = &line[strlen(line) - 1];
 		while ((end - 1) >= line && (end[-1] == '\t' || end[-1] == ' '))
 			end--;