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-rw-r--r--vcl/unx/generic/app/i18n_cb.cxx2
1 files changed, 1 insertions, 1 deletions
diff --git a/vcl/unx/generic/app/i18n_cb.cxx b/vcl/unx/generic/app/i18n_cb.cxx
index 4e5f9952c20f..c17c01a4d225 100644
--- a/vcl/unx/generic/app/i18n_cb.cxx
+++ b/vcl/unx/generic/app/i18n_cb.cxx
@@ -146,7 +146,7 @@ Preedit_InsertText(preedit_text_t *pText, XIMText *pInsertText, int where)
if (pInsertText->encoding_is_wchar)
{
wchar_t *pWCString = pInsertText->string.wide_char;
- size_t nBytes = wcstombs ( nullptr, pWCString, 1024 /* don't care */);
+ size_t nBytes = wcstombs ( nullptr, pWCString, 0 /* don't care */);
pMBString = static_cast<char*>(alloca( nBytes + 1 ));
nMBLength = wcstombs ( pMBString, pWCString, nBytes + 1);
}