Jacek Caban : msvcrt: Use memmove to copy memory in wmemcpy_s.
Alexandre Julliard
julliard at winehq.org
Fri Oct 5 16:40:40 CDT 2018
Module: wine
Branch: master
Commit: be56a83fd00cdaf9583a973b1e041f47c5277768
URL: https://source.winehq.org/git/wine.git/?a=commit;h=be56a83fd00cdaf9583a973b1e041f47c5277768
Author: Jacek Caban <jacek at codeweavers.com>
Date: Fri Oct 5 16:38:48 2018 +0200
msvcrt: Use memmove to copy memory in wmemcpy_s.
Fixes memory corruption in Outlook 2016.
Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Piotr Caban <piotr at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/msvcr100/tests/msvcr100.c | 14 +++++++++++++-
dlls/msvcrt/heap.c | 2 +-
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/dlls/msvcr100/tests/msvcr100.c b/dlls/msvcr100/tests/msvcr100.c
index db5a4cb..594ac28 100644
--- a/dlls/msvcr100/tests/msvcr100.c
+++ b/dlls/msvcr100/tests/msvcr100.c
@@ -371,7 +371,7 @@ static BOOL init(void)
static void test_wmemcpy_s(void)
{
- static wchar_t dest[8];
+ static wchar_t dest[8], buf[32];
static const wchar_t tiny[] = {'T',0,'I','N','Y',0};
static const wchar_t big[] = {'a','t','o','o','l','o','n','g','s','t','r','i','n','g',0};
const wchar_t XX = 0x5858; /* two 'X' bytes */
@@ -434,6 +434,18 @@ static void test_wmemcpy_s(void)
okwchars(dest, XX, XX, XX, XX, XX, XX, XX, XX);
CHECK_CALLED(invalid_parameter_handler);
+ ret = p_wmemcpy_s(buf, ARRAY_SIZE(buf), big, ARRAY_SIZE(big));
+ ok(!ret, "wmemcpy_s returned %d\n", ret);
+ ok(!memcmp(buf, big, sizeof(big)), "unexpected buf\n");
+
+ ret = p_wmemcpy_s(buf + 1, ARRAY_SIZE(buf) - 1, buf, ARRAY_SIZE(big));
+ ok(!ret, "wmemcpy_s returned %d\n", ret);
+ ok(!memcmp(buf + 1, big, sizeof(big)), "unexpected buf\n");
+
+ ret = p_wmemcpy_s(buf, ARRAY_SIZE(buf), buf + 1, ARRAY_SIZE(big));
+ ok(!ret, "wmemcpy_s returned %d\n", ret);
+ ok(!memcmp(buf, big, sizeof(big)), "unexpected buf\n");
+
ok(p_set_invalid_parameter_handler(NULL) == test_invalid_parameter_handler,
"Cannot reset invalid parameter handler\n");
}
diff --git a/dlls/msvcrt/heap.c b/dlls/msvcrt/heap.c
index b4f11d8..a780896 100644
--- a/dlls/msvcrt/heap.c
+++ b/dlls/msvcrt/heap.c
@@ -826,7 +826,7 @@ int CDECL wmemcpy_s(MSVCRT_wchar_t *dest, MSVCRT_size_t numberOfElements,
return MSVCRT_ERANGE;
}
- memcpy(dest, src, sizeof(MSVCRT_wchar_t)*count);
+ memmove(dest, src, sizeof(MSVCRT_wchar_t)*count);
return 0;
}
#endif
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