X-Git-Url: https://git.saurik.com/apple/icu.git/blobdiff_plain/f3c0d7a59d99c2a94c6b8822291f0e42be3773c9..c5116b9f5a666b9d59f443b3770acd6ef64dc6c3:/icuSources/io/ufile.cpp?ds=inline

diff --git a/icuSources/io/ufile.cpp b/icuSources/io/ufile.cpp
index 6cbb8975..1d8c221c 100644
--- a/icuSources/io/ufile.cpp
+++ b/icuSources/io/ufile.cpp
@@ -160,7 +160,7 @@ u_fopen_u(const UChar   *filename,
         // TODO: test this code path, including wperm.
         wchar_t wperm[40] = {};
         size_t  retVal;
-        mbstowcs_s(&retVal, wperm, perm, _TRUNCATE);
+        mbstowcs_s(&retVal, wperm, UPRV_LENGTHOF(wperm), perm, _TRUNCATE);
         FILE *systemFile = _wfopen((const wchar_t *)filename, wperm);
         if (systemFile) {
             result = finit_owner(systemFile, locale, codepage, TRUE);