commit 241562e7abd804006c95893610ed5acacc223b4c
Author: Koji Yokota <[email protected]>
Date: Mon Oct 20 09:35:31 2025 +0900
Fix a bug that can cause invalid memory access
---
src/frontends/qt/GuiInputMethod.cpp | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/frontends/qt/GuiInputMethod.cpp
b/src/frontends/qt/GuiInputMethod.cpp
index 1852155dbd..d08f46211a 100644
--- a/src/frontends/qt/GuiInputMethod.cpp
+++ b/src/frontends/qt/GuiInputMethod.cpp
@@ -1260,6 +1260,8 @@ pos_type GuiInputMethod::getCaretPos(size_type
preedit_length)
GuiInputMethod::PreeditRow GuiInputMethod::getCaretInfo(
const bool real_boundary, const bool virtual_boundary)
{
+ // the virtual boundary case has the real cusor on the second row of
+ // the preedit inputs
const pos_type second_row_idx = d->cur_row_idx_ + 1 - virtual_boundary;
// accumulate the length of preedit elements within
d->rows_[d->cur_row_idx_]
@@ -1285,7 +1287,7 @@ GuiInputMethod::PreeditRow GuiInputMethod::getCaretInfo(
second_row_idx + virtual_boundary : d->cur_row_idx_;
// the second row exists and begins with the preedit
- if (second_row_idx < (pos_type)d->rows_size_ &&
+ if (second_row_idx + virtual_boundary < (pos_type)d->rows_size_ &&
d->rows_[second_row_idx +
virtual_boundary].begin()->isPreedit()) {
for (pos_type i = second_row_idx + virtual_boundary;
--
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