Paul Gofman : ntdll/tests: Fix the case of absent XSTATE context in test_copy_context().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: be92764a5af835235736c77f53458641df3bcfe9
URL:    https://gitlab.winehq.org/wine/wine/-/commit/be92764a5af835235736c77f5345864...

Author: Paul Gofman <pgofman(a)codeweavers.com>
Date:   Wed Jan 11 10:58:47 2023 -0600

ntdll/tests: Fix the case of absent XSTATE context in test_copy_context().

---

 dlls/ntdll/tests/exception.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/dlls/ntdll/tests/exception.c b/dlls/ntdll/tests/exception.c
index 4bf2e4ec78e..b9d38ef4f0e 100644
--- a/dlls/ntdll/tests/exception.c
+++ b/dlls/ntdll/tests/exception.c
@@ -10524,10 +10524,13 @@ static void test_copy_context(void)
         *(DWORD *)((BYTE *)dst + flags_offset) = 0;
         *(DWORD *)((BYTE *)src + flags_offset) = 0;
 
-        src_xs = (XSTATE *)((BYTE *)src_ex + src_ex->XState.Offset);
-        memset(src_xs, 0xcc, sizeof(XSTATE));
-        src_xs->Mask = 3;
-        src_xs->CompactionMask = ~(ULONG64)0;
+        if (flags & 0x40)
+        {
+            src_xs = (XSTATE *)((BYTE *)src_ex + src_ex->XState.Offset);
+            memset(src_xs, 0xcc, sizeof(XSTATE));
+            src_xs->Mask = 3;
+            src_xs->CompactionMask = ~(ULONG64)0;
+        }
 
         status = pRtlCopyExtendedContext(dst_ex, flags, src_ex);
         ok(!status, "Got unexpected status %#lx, flags %#lx.\n", status, flags);