From: Alan T. DeKok <aland@freeradius.org>
Date: Tue, 30 Dec 2025 12:05:34 +0000 (-0500)
Subject: ban strncpy()
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ac69fa15d972b42423cd3d70e73e57525eac43b;p=thirdparty%2Ffreeradius-server.git

ban strncpy()
---

diff --git a/src/include/build.h b/src/include/build.h
index 67158d193ad..0fd4b3cc7dc 100644
--- a/src/include/build.h
+++ b/src/include/build.h
@@ -510,3 +510,10 @@ do { \
 	do { \
 		_type ignored UNUSED = (_expr); \
 	} while (0)
+
+/** Force a compilation error if strncpy() is used.
+ *
+ */
+extern char *dont_use_strncpy(char *dst, char const *src, size_t len);
+#undef strncpy
+#define strncpy(_dst, _src, _len) dont_use_strncpy()