Bernhard Kölbl : combase: Add padding and string reference pointer to hstring_header.
Module: wine Branch: master Commit: 369e4e3609b9f0b8c846bdd346a8aa040270c49a URL: https://source.winehq.org/git/wine.git/?a=commit;h=369e4e3609b9f0b8c846bdd34... Author: Bernhard Kölbl <besentv(a)gmail.com> Date: Mon Jan 24 16:09:22 2022 +0100 combase: Add padding and string reference pointer to hstring_header. Signed-off-by: Bernhard Kölbl <besentv(a)gmail.com> Signed-off-by: Huw Davies <huw(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/combase/string.c | 32 ++++++++++++++++++-------------- dlls/combase/tests/string.c | 1 - 2 files changed, 18 insertions(+), 15 deletions(-) diff --git a/dlls/combase/string.c b/dlls/combase/string.c index 1e1e60db758..8c4d9a2cfbf 100644 --- a/dlls/combase/string.c +++ b/dlls/combase/string.c @@ -32,6 +32,9 @@ struct hstring_header { UINT32 flags; UINT32 length; + UINT32 padding1; + UINT32 padding2; + const WCHAR *str; }; struct hstring_private @@ -70,6 +73,7 @@ static BOOL alloc_string(UINT32 len, HSTRING *out) priv->header.flags = 0; priv->buffer = (LPWSTR)(priv + 1); priv->header.length = len; + priv->header.str = priv->buffer; priv->refcount = 1; priv->buffer[len] = '\0'; @@ -125,7 +129,7 @@ HRESULT WINAPI WindowsCreateStringReference(LPCWSTR ptr, UINT32 len, if (ptr == NULL) return E_POINTER; - priv->buffer = (LPWSTR)ptr; + priv->header.str = ptr; priv->header.length = len; priv->header.flags = HSTRING_REFERENCE_FLAG; @@ -168,7 +172,7 @@ HRESULT WINAPI WindowsDuplicateString(HSTRING str, HSTRING *out) return S_OK; } if (priv->header.flags & HSTRING_REFERENCE_FLAG) - return WindowsCreateString(priv->buffer, priv->header.length, out); + return WindowsCreateString(priv->header.str, priv->header.length, out); InterlockedIncrement(&priv->refcount); *out = str; return S_OK; @@ -270,7 +274,7 @@ LPCWSTR WINAPI WindowsGetStringRawBuffer(HSTRING str, UINT32 *len) } if (len) *len = priv->header.length; - return priv->buffer; + return priv->header.str; } /*********************************************************************** @@ -292,7 +296,7 @@ HRESULT WINAPI WindowsStringHasEmbeddedNull(HSTRING str, BOOL *out) } for (i = 0; i < priv->header.length; i++) { - if (priv->buffer[i] == '\0') + if (priv->header.str[i] == '\0') { *out = TRUE; return S_OK; @@ -321,7 +325,7 @@ HRESULT WINAPI WindowsSubstring(HSTRING str, UINT32 start, HSTRING *out) *out = NULL; return S_OK; } - return WindowsCreateString(&priv->buffer[start], len - start, out); + return WindowsCreateString(&priv->header.str[start], len - start, out); } /*********************************************************************** @@ -343,7 +347,7 @@ HRESULT WINAPI WindowsSubstringWithSpecifiedLength(HSTRING str, UINT32 start, UI *out = NULL; return S_OK; } - return WindowsCreateString(&priv->buffer[start], len, out); + return WindowsCreateString(&priv->header.str[start], len, out); } /*********************************************************************** @@ -371,8 +375,8 @@ HRESULT WINAPI WindowsConcatString(HSTRING str1, HSTRING str2, HSTRING *out) if (!alloc_string(priv1->header.length + priv2->header.length, out)) return E_OUTOFMEMORY; priv = impl_from_HSTRING(*out); - memcpy(priv->buffer, priv1->buffer, priv1->header.length * sizeof(*priv1->buffer)); - memcpy(priv->buffer + priv1->header.length, priv2->buffer, priv2->header.length * sizeof(*priv2->buffer)); + memcpy(priv->buffer, priv1->header.str, priv1->header.length * sizeof(*priv1->buffer)); + memcpy(priv->buffer + priv1->header.length, priv2->header.str, priv2->header.length * sizeof(*priv2->buffer)); return S_OK; } @@ -411,12 +415,12 @@ HRESULT WINAPI WindowsCompareStringOrdinal(HSTRING str1, HSTRING str2, INT32 *re } if (str1) { - buf1 = priv1->buffer; + buf1 = priv1->header.str; len1 = priv1->header.length; } if (str2) { - buf2 = priv2->buffer; + buf2 = priv2->header.str; len2 = priv2->header.length; } *res = CompareStringOrdinal(buf1, len1, buf2, len2, FALSE) - CSTR_EQUAL; @@ -443,10 +447,10 @@ HRESULT WINAPI WindowsTrimStringStart(HSTRING str1, HSTRING str2, HSTRING *out) } for (start = 0; start < priv1->header.length; start++) { - if (!wmemchr(priv2->buffer, priv1->buffer[start], priv2->header.length)) + if (!wmemchr(priv2->header.str, priv1->header.str[start], priv2->header.length)) break; } - return start ? WindowsCreateString(&priv1->buffer[start], priv1->header.length - start, out) : + return start ? WindowsCreateString(&priv1->header.str[start], priv1->header.length - start, out) : WindowsDuplicateString(str1, out); } @@ -470,9 +474,9 @@ HRESULT WINAPI WindowsTrimStringEnd(HSTRING str1, HSTRING str2, HSTRING *out) } for (len = priv1->header.length; len > 0; len--) { - if (!wmemchr(priv2->buffer, priv1->buffer[len - 1], priv2->header.length)) + if (!wmemchr(priv2->header.str, priv1->header.str[len - 1], priv2->header.length)) break; } - return (len < priv1->header.length) ? WindowsCreateString(priv1->buffer, len, out) : + return (len < priv1->header.length) ? WindowsCreateString(priv1->header.str, len, out) : WindowsDuplicateString(str1, out); } diff --git a/dlls/combase/tests/string.c b/dlls/combase/tests/string.c index 9e4c6281866..46cf58a271a 100644 --- a/dlls/combase/tests/string.c +++ b/dlls/combase/tests/string.c @@ -548,7 +548,6 @@ static void test_hstring_struct(void) ok(prv == prv2, "Pointers not identical.\n"); ok(prv2->header.flags == 1, "Expected HSTRING_REFERENCE_FLAG to be set, got %#x.\n", prv2->header.flags); ok(prv2->header.length == 6, "Expected 6 in length field, got %u.\n", prv2->header.length); - todo_wine ok(prv2->header.str == input_string, "Expected str to point at input_string, instead pointing at %p.\n", prv2->header.str); ok(WindowsDeleteString(str) == S_OK, "Failed to delete string ref.\n");
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Alexandre Julliard