1 files changed, 23 insertions, 0 deletions
diff --git a/src/strnlen.h b/src/strnlen.h
new file mode 100644
index 000000000..fdd7fe39c
--- /dev/null
+++ b/src/strnlen.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_strlen_h__
+#define INCLUDE_strlen_h__
+
+#if defined(__MINGW32__) || defined(__sun) || defined(__APPLE__) || defined(__MidnightBSD__)
+#   define NO_STRNLEN
+#endif
+
+#ifdef NO_STRNLEN
+GIT_INLINE(size_t) p_strnlen(const char *s, size_t maxlen) {
+	const char *end = memchr(s, 0, maxlen);
+	return end ? (size_t)(end - s) : maxlen;
+}
+#else
+#   define p_strnlen strnlen
+#endif
+
+#endif