From ff7acdc36b30582f8720e445cd01505fbcc51624 Mon Sep 17 00:00:00 2001
From: Chiram <44694735+ZenamLeong@users.noreply.github.com>
Date: Fri, 8 Jan 2021 21:27:40 +0800
Subject: [PATCH] fix(table_translator): index out of bound access in string

when trying to add blank to preedit then increase pos, might lead to
input[pos - 1] out of bound.

`pos` is tracking string variable `preedit`, they should be updated in
sync. checking delimiters at word ending should also refer to
`preedit` instead of the unchanged `input_`.
---
 src/rime/gear/table_translator.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rime/gear/table_translator.cc b/src/rime/gear/table_translator.cc
index 731d9037de..162ac02449 100644
--- a/src/rime/gear/table_translator.cc
+++ b/src/rime/gear/table_translator.cc
@@ -500,7 +500,7 @@ void SentenceTranslation::PrepareSentence() {
   // split syllables
   size_t pos = 0;
   for (int len : sentence_->word_lengths()) {
-    if (pos > 0 && delimiters.find(input_[pos - 1]) == string::npos) {
+    if (pos > 0 && delimiters.find(preedit[pos - 1]) == string::npos) {
       preedit.insert(pos, 1, ' ');
       ++pos;
     }