msxml3: Properly handle -1 as length of element qualified name in startElement().

dlls/msxml3/mxwriter.c

@@ -536,7 +536,10 @@ static void close_element_starttag(const mxwriter *This)
 static void set_element_name(mxwriter *This, const WCHAR *name, int len)
 {
     SysFreeString(This->element);
-    This->element = name ? SysAllocStringLen(name, len) : NULL;
+    if (name)
+        This->element = len != -1 ? SysAllocStringLen(name, len) : SysAllocString(name);
+    else
+        This->element = NULL;
 }
 
 static inline HRESULT flush_output_buffer(mxwriter *This)

dlls/msxml3/tests/saxreader.c

@@ -2822,6 +2822,7 @@ static void test_mxwriter_flush(void)
     HRESULT hr;
     char *buff;
     LONG ref;
+    int len;
 
     hr = CoCreateInstance(&CLSID_MXXMLWriter, NULL, CLSCTX_INPROC_SERVER,
             &IID_IMXWriter, (void**)&writer);
@@ -2919,9 +2920,10 @@ static void test_mxwriter_flush(void)
     EXPECT_HR(hr, S_OK);
     ok(pos2.QuadPart == 0, "expected stream beginning\n");
 
-    buff = HeapAlloc(GetProcessHeap(), 0, 2048);
-    memset(buff, 'A', 2048);
-    hr = ISAXContentHandler_characters(content, _bstr_(buff), 2048);
+    len = 2048;
+    buff = HeapAlloc(GetProcessHeap(), 0, len);
+    memset(buff, 'A', len);
+    hr = ISAXContentHandler_characters(content, _bstr_(buff), len);
     EXPECT_HR(hr, S_OK);
 
     pos.QuadPart = 0;
@@ -2965,8 +2967,8 @@ todo_wine
     EXPECT_HR(hr, S_OK);
     ok(pos2.QuadPart == 0, "expected stream beginning\n");
 
-    memset(buff, 'A', 2048);
-    hr = ISAXContentHandler_characters(content, _bstr_(buff), 2040);
+    memset(buff, 'A', len);
+    hr = ISAXContentHandler_characters(content, _bstr_(buff), len - 8);
     EXPECT_HR(hr, S_OK);
 
     pos.QuadPart = 0;
@@ -2978,6 +2980,28 @@ todo_wine
     hr = ISAXContentHandler_endDocument(content);
     EXPECT_HR(hr, S_OK);
 
+    /* test auto-flush function when stream is not set */
+    V_VT(&dest) = VT_EMPTY;
+    hr = IMXWriter_put_output(writer, dest);
+    EXPECT_HR(hr, S_OK);
+
+    hr = ISAXContentHandler_startDocument(content);
+    EXPECT_HR(hr, S_OK);
+
+    hr = ISAXContentHandler_startElement(content, emptyW, 0, emptyW, 0, _bstr_("a"), -1, NULL);
+    EXPECT_HR(hr, S_OK);
+
+    memset(buff, 'A', len);
+    hr = ISAXContentHandler_characters(content, _bstr_(buff), len);
+    EXPECT_HR(hr, S_OK);
+
+    V_VT(&dest) = VT_EMPTY;
+    hr = IMXWriter_get_output(writer, &dest);
+    EXPECT_HR(hr, S_OK);
+    len += strlen("<a>");
+    ok(SysStringLen(V_BSTR(&dest)) == len, "got len=%d, expected %d\n", SysStringLen(V_BSTR(&dest)), len);
+    VariantClear(&dest);
+
     HeapFree(GetProcessHeap(), 0, buff);
     ISAXContentHandler_Release(content);
     IStream_Release(stream);
@@ -3382,6 +3406,18 @@ static void test_mxwriter_startendelement(void)
     ok(!lstrcmpW(_bstr_("<abc></abd>"), V_BSTR(&dest)), "got wrong content %s\n", wine_dbgstr_w(V_BSTR(&dest)));
     VariantClear(&dest);
 
+    V_VT(&dest) = VT_EMPTY;
+    hr = IMXWriter_put_output(writer, dest);
+    EXPECT_HR(hr, S_OK);
+
+    hr = ISAXContentHandler_startElement(content, _bstr_(""), 0, _bstr_(""), 0, _bstr_("a"), -1, NULL);
+    EXPECT_HR(hr, S_OK);
+    V_VT(&dest) = VT_EMPTY;
+    hr = IMXWriter_get_output(writer, &dest);
+    EXPECT_HR(hr, S_OK);
+    ok(V_VT(&dest) == VT_BSTR, "got %d\n", V_VT(&dest));
+    ok(!lstrcmpW(_bstr_("<a>"), V_BSTR(&dest)), "got wrong content %s\n", wine_dbgstr_w(V_BSTR(&dest)));
+
     ISAXContentHandler_Release(content);
     IMXWriter_Release(writer);
     free_bstrs();