1 files changed, 5 insertions, 3 deletions
diff --git a/xfa/fgas/layout/cfx_rtfbreak.cpp b/xfa/fgas/layout/cfx_rtfbreak.cpp
index 0b556d89eb..761bd2fc03 100644
--- a/xfa/fgas/layout/cfx_rtfbreak.cpp
+++ b/xfa/fgas/layout/cfx_rtfbreak.cpp
@@ -363,10 +363,12 @@ void CFX_RTFBreak::EndBreak_BidiLine(std::deque<FX_TPO>* tpos,
   std::vector<CFX_Char>& chars = m_pCurLine->m_LineChars;
   int32_t iCount = m_pCurLine->CountChars();
   if (!m_bPagination && m_pCurLine->m_iArabicChars > 0) {
-    int32_t iBidiNum = 0;
-    for (int32_t i = 0; i < iCount; ++i) {
+    ASSERT(iCount >= 0);
+
+    size_t iBidiNum = 0;
+    for (size_t i = 0; i < static_cast<size_t>(iCount); ++i) {
       pTC = &chars[i];
-      pTC->m_iBidiPos = i;
+      pTC->m_iBidiPos = static_cast<int32_t>(i);
       if (pTC->GetCharType() != FX_CHARTYPE_Control)
         iBidiNum = i;
       if (i == 0)