Piotr Caban : msvcrt: Construct a real C++ object to test against.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0c3653bbcd3af9d845b0582f9db852a3454cd074
URL:    https://gitlab.winehq.org/wine/wine/-/commit/0c3653bbcd3af9d845b0582f9db852a...

Author: Piotr Caban <eric.pouech(a)codeweavers.com>
Date:   Wed Dec  7 14:28:06 2022 +0100

msvcrt: Construct a real C++ object to test against.

This fixes GCC12 warnings about accessing a too small object.

    wine/dlls/msvcrt/tests/cpp.c: In function 'test_rtti':
    wine/dlls/msvcrt/tests/cpp.c:1036:45: warning: array subscript 2 is outside array bounds of 'void[4]' [-Warray-bounds]
     1036 |       ok (casted == (char*)&child_class_sig0+8, "failed cast to simple_class (%p %p)\n", casted, &child_class_sig0);
          |                     ~~~~~~~~~~~~~~~~~~~~~~~~^~

Signed-off-by: Piotr Caban <piotr.caban(a)codeweavers.com>
Signed-off-by: Eric Pouech <eric.pouech(a)gmail.com>

---

 dlls/msvcrt/tests/cpp.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/dlls/msvcrt/tests/cpp.c b/dlls/msvcrt/tests/cpp.c
index b2b6a1909b7..e5fa652ede2 100644
--- a/dlls/msvcrt/tests/cpp.c
+++ b/dlls/msvcrt/tests/cpp.c
@@ -943,11 +943,17 @@ static void test_rtti(void)
   void *simple_class_vtbl[2] = {&simple_class_rtti.object_locator};
   void *simple_class = &simple_class_vtbl[1];
   void *child_class_vtbl[2] = {&child_class_rtti.object_locator};
-  void *child_class = &child_class_vtbl[1];
+  struct {
+      void *vtbl;
+      char data[4];
+  } child_class = { &child_class_vtbl[1] };
   void *simple_class_sig0_vtbl[2] = {&simple_class_sig0_rtti.object_locator};
   void *simple_class_sig0 = &simple_class_sig0_vtbl[1];
   void *child_class_sig0_vtbl[2] = {&child_class_sig0_rtti.object_locator};
-  void *child_class_sig0 = &child_class_sig0_vtbl[1];
+  struct {
+      void *vtbl;
+      char data[4];
+  } child_class_sig0 = { &child_class_sig0_vtbl[1] };
   void *virtual_base_class_vtbl[2] = {&virtual_base_class_rtti.object_locator};
   int virtual_base_class_vbtbl[2] = {0, 0x100};
   struct {