From d13b4a793d577be2364bcabb05bca1f19321b65a Mon Sep 17 00:00:00 2001 From: Přemysl Eric Janouch Date: Sat, 24 Sep 2022 18:42:59 +0200 Subject: Prevent undefined behaviour --- src/stardict.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src') diff --git a/src/stardict.c b/src/stardict.c index cdd11a1..6775553 100644 --- a/src/stardict.c +++ b/src/stardict.c @@ -1014,6 +1014,10 @@ stardict_longest_common_collation_prefix (StardictDict *sd, u_strFromUTF8 (NULL, 0, &uc2_len, s2, -1, &error); error = U_ZERO_ERROR; + // Prevent undefined behaviour with VLAs. + if (!uc1_len || !uc2_len) + return 0; + UChar uc1[uc1_len]; UChar uc2[uc2_len]; u_strFromUTF8 (uc1, uc1_len, NULL, s1, -1, &error); -- cgit v1.2.3-70-g09d2