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-rw-r--r--xfa/fxfa/fm2js/cxfa_fmlexer.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/xfa/fxfa/fm2js/cxfa_fmlexer.cpp b/xfa/fxfa/fm2js/cxfa_fmlexer.cpp
index 3a694675b7..f9771940b6 100644
--- a/xfa/fxfa/fm2js/cxfa_fmlexer.cpp
+++ b/xfa/fxfa/fm2js/cxfa_fmlexer.cpp
@@ -304,8 +304,10 @@ CXFA_FMToken CXFA_FMLexer::NextToken() {
CXFA_FMToken CXFA_FMLexer::AdvanceForNumber() {
// This will set end to the character after the end of the number.
int32_t used_length = 0;
- if (m_cursor)
- FXSYS_wcstof(const_cast<wchar_t*>(m_cursor), -1, &used_length);
+ if (m_cursor) {
+ FXSYS_wcstof(const_cast<wchar_t*>(m_cursor), m_end - m_cursor,
+ &used_length);
+ }
const wchar_t* end = m_cursor + used_length;
if (used_length == 0 || !end || FXSYS_iswalpha(*end)) {