From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Wed, 15 Jan 2020 19:09:34 +0000 (+0200)
Subject: lib-fts: Add assert to make sure uni_utf8_get_char() returns valid UTF-8
X-Git-Tag: 2.3.9.3~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=75713bd26b49805d3107f25bc8be5e9678e3489e;p=thirdparty%2Fdovecot%2Fcore.git

lib-fts: Add assert to make sure uni_utf8_get_char() returns valid UTF-8

The input to lib-fts is always expected to be valid UTF-8.
---

diff --git a/src/lib-fts/fts-filter-contractions.c b/src/lib-fts/fts-filter-contractions.c
index 67bab47f03..11afbb98b5 100644
--- a/src/lib-fts/fts-filter-contractions.c
+++ b/src/lib-fts/fts-filter-contractions.c
@@ -58,6 +58,7 @@ fts_filter_contractions_filter(struct fts_filter *filter ATTR_UNUSED,
 		if (token[pos] == '\0')
 			break;
 		char_size = uni_utf8_get_char(token + pos, &apostrophe);
+		i_assert(char_size > 0);
 		if (IS_APOSTROPHE(apostrophe)) {
 			pos += char_size;
 			*_token = token + pos;