From: Aki Tuomi <aki.tuomi@open-xchange.com>
Date: Thu, 23 Jan 2020 07:54:44 +0000 (+0200)
Subject: lib-mail: Add assert to ensure we don't overstep in input_idx_need_encoding
X-Git-Tag: 2.3.10~108
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=57792b29d2d562fed3d774abe0b02f1680b41638;p=thirdparty%2Fdovecot%2Fcore.git

lib-mail: Add assert to ensure we don't overstep in input_idx_need_encoding

Satisfies static analysers.
---

diff --git a/src/lib-mail/message-header-encode.c b/src/lib-mail/message-header-encode.c
index 38cb86b245..35454aa67b 100644
--- a/src/lib-mail/message-header-encode.c
+++ b/src/lib-mail/message-header-encode.c
@@ -25,6 +25,7 @@ static bool input_idx_need_encoding(const unsigned char *input,
 			/* trailing LF - we need to drop it */
 			return TRUE;
 		}
+		i_assert(i+1 < len);
 		if (input[i+1] != '\t' && input[i+1] != ' ') {
 			/* LF not followed by whitespace - we need to
 			   add the whitespace */