win32u: Fix name comparison in find_class.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52654Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

win32u: Fix name comparison in find_class.
d402df31 · Jacek Caban · Alexandre Julliard · 0b350ab9 · d402df31 · d402df31
Commit d402df31 authored Mar 15, 2022 by Jacek Caban Committed by Alexandre Julliard Mar 15, 2022
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class.c dlls/user32/tests/class.c +5 -0

class.c dlls/win32u/class.c +2 -1

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--- a/dlls/user32/tests/class.c
+++ b/dlls/user32/tests/class.c
@@ -1049,6 +1049,11 @@ if (0) { /* crashes under XP */
    ok(ret, "GetClassInfoExA() error %ld\n", GetLastError());
    ok(wcx.cbSize == sizeof(wcx) + 1, "expected sizeof(wcx)+1, got %u\n", wcx.cbSize);
    ok(wcx.lpfnWndProc != NULL, "got null proc\n");
+
+    wcx.cbSize = sizeof(wcx);
+    ret = GetClassInfoExA(0, "stati", &wcx);
+    ok(!ret && GetLastError() == ERROR_CLASS_DOES_NOT_EXIST,
+       "GetClassInfoExA() returned %x %ld\n", ret, GetLastError());
 }

 static void test_icons(void)

--- a/dlls/win32u/class.c
+++ b/dlls/win32u/class.c
@@ -259,7 +259,8 @@ static CLASS *find_class( HINSTANCE module, UNICODE_STRING *name )
        }
        else
        {
-            if (wcsnicmp( class->name, name->Buffer, name->Length / sizeof(WCHAR) )) continue;
+            if (wcsnicmp( class->name, name->Buffer, name->Length / sizeof(WCHAR) ) ||
+                class->name[name->Length / sizeof(WCHAR)]) continue;
        }
        if (!class->local || !module || (class->instance & ~0xffff) == instance)
        {