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oleaut32/tests: Show that VARIANT_UserUnmarshal may reuse passed in BSTR. 

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2016-01-13 09:51:57 +01:00 committed by Alexandre Julliard
parent ba498e6002
commit 1063623dfb
1 changed files with 8 additions and 2 deletions
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10
dlls/oleaut32/tests/usrmarshal.c
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@ -767,7 +767,7 @@ static void test_marshal_VARIANT(void)
double d;
void *mem;
DWORD *wirev;
BSTR b;
BSTR b, b2;
WCHAR str[] = {'m','a','r','s','h','a','l',' ','t','e','s','t',0};
SAFEARRAYBOUND sab;
LPSAFEARRAY lpsa, lpsa2, lpsa_copy;
@ -1237,15 +1237,21 @@ static void test_marshal_VARIANT(void)
ok(*wirev, "wv[6] %08x\n", *wirev); /* win2k: this is b. winxp: this is (char*)b + 1 */
wirev++;
check_bstr(wirev, b);
b2 = SysAllocString(str);
b2[0] = 0;
V_VT(&v2) = VT_BSTR | VT_BYREF;
V_BSTRREF(&v2) = &b2;
mem = b2;
VariantInit(&v2);
stubMsg.Buffer = buffer;
next = VARIANT_UserUnmarshal(&umcb.Flags, buffer, &v2);
ok(next == buffer + stubMsg.BufferLength, "got %p expect %p\n", next, buffer + stubMsg.BufferLength);
ok(mem == b2, "BSTR should be reused\n");
ok(V_VT(&v) == V_VT(&v2), "got vt %d expect %d\n", V_VT(&v), V_VT(&v2));
ok(SysStringByteLen(*V_BSTRREF(&v)) == SysStringByteLen(*V_BSTRREF(&v2)), "bstr string lens differ\n");
ok(!memcmp(*V_BSTRREF(&v), *V_BSTRREF(&v2), SysStringByteLen(*V_BSTRREF(&v))), "bstrs differ\n");
VARIANT_UserFree(&umcb.Flags, &v2);
SysFreeString(b2);
HeapFree(GetProcessHeap(), 0, oldbuffer);
SysFreeString(b);