From ac938e2ecb48ab4dd21298126c7921689d60571b Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>

Date: Tue, 12 Nov 2019 20:03:15 +0000

Subject: [PATCH] invalid read memory access #624

---

 src/hunspell/suggestmgr.cxx | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hunspell/suggestmgr.cxx b/src/hunspell/suggestmgr.cxx

index dba084e..c23f165 100644

--- a/src/hunspell/suggestmgr.cxx

+++ b/src/hunspell/suggestmgr.cxx

@@ -2040,7 +2040,7 @@ int SuggestMgr::leftcommonsubstring(

   int l2 = su2.size();

   // decapitalize dictionary word

   if (complexprefixes) {

-    if (su1[l1 - 1] == su2[l2 - 1])

+    if (l1 && l2 && su1[l1 - 1] == su2[l2 - 1])

       return 1;

   } else {

     unsigned short idx = su2.empty() ? 0 : (su2[0].h << 8) + su2[0].l;

-- 

2.23.0