From 21d2d5191160439544150c017216f751c2c392fd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tim=20R=C3=BChsen?= Date: Sun, 16 Jan 2022 12:55:51 +0100 Subject: [PATCH] Avoid 'NULL + 1' as it is UB --- src/psl.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/psl.c b/src/psl.c index dcc92ee..5b9f470 100644 --- a/src/psl.c +++ b/src/psl.c @@ -568,7 +568,7 @@ static int domain_to_punycode(const char *domain, char *out, size_t outsize) punycode_uint input[256]; const char *label, *e; - for (e = label = domain; e; label = e + 1) { + for (e = label = domain; e;) { e = strchr(label, '.'); labellen = e ? (size_t) (e - label) : strlen(label); @@ -596,8 +596,10 @@ static int domain_to_punycode(const char *domain, char *out, size_t outsize) outlen += labellen; } - if (e) + if (e) { + label = e + 1; out[outlen++] = '.'; + } out[outlen] = 0; }