fix round trip check in wxMBConv_win32::WC2MB() when the buffer size is 0

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48835 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2007-09-20 13:16:37 +00:00
parent 3cc3afeba0
commit 564da6ff0b
1 changed files with 3 additions and 1 deletions
--- a/src/common/strconv.cpp
+++ b/src/common/strconv.cpp
@@ -2457,8 +2457,10 @@ public:
                    return wxCONV_FAILED;
            }

+            if ( !n )
+                n = wcslen(pwz);
            wxWCharBuffer wcBuf(n);
-            if ( MB2WC(wcBuf.data(), buf, n) == wxCONV_FAILED ||
+            if ( MB2WC(wcBuf.data(), buf, n + 1) == wxCONV_FAILED ||
                    wcscmp(wcBuf, pwz) != 0 )
            {
                // we didn't obtain the same thing we started from, hence