From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dong Du Date: Tue, 27 Jul 2021 00:41:11 +0800 Subject: [PATCH] lib: sbi: Fix bug in strncmp function Message-ID: <20210726164111.17320-1-ddnirvana1@gmail.com> List-Id: To: opensbi@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Dong Du strncmp should return 0 when the count is 0. Fix the issue in sbi_strncmp. Signed-off-by: Dong Du --- lib/sbi/sbi_string.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/sbi/sbi_string.c b/lib/sbi/sbi_string.c index 7805ba4..f93ed5f 100644 --- a/lib/sbi/sbi_string.c +++ b/lib/sbi/sbi_string.c @@ -29,6 +29,9 @@ int sbi_strcmp(const char *a, const char *b) int sbi_strncmp(const char *a, const char *b, size_t count) { + if (!count) + return 0; + /* search first diff or end of string */ for (; count > 0 && *a == *b && *a != '\0'; a++, b++, count--) ; -- 2.31.1