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xmllite: Don't lose terminating character when shrinking buffer. 

The utf16 buffer is expected to be terminated by a '0' character.
Flawed buffer shrinking logic would move the buffer contents but
forget about the terminating character, which could cause reading
junk past the end of the buffer contents.

Signed-off-by: Eduard Permyakov <epermyakov@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Eduard Permyakov 2021-08-06 15:01:16 +03:00 committed by Alexandre Julliard
parent 4303e75313
commit 2d33f406c9
1 changed files with 2 additions and 0 deletions
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2
dlls/xmllite/reader.c
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@ -2128,6 +2128,7 @@ static HRESULT reader_parse_reference(xmlreader *reader)
memmove(start + 1, ptr + 1, len);
buffer->written -= (reader_get_cur(reader) - cur) * sizeof(WCHAR);
*(WCHAR*)(buffer->data + buffer->written) = 0;
buffer->cur = cur + 1;
*start = ch;
@ -2151,6 +2152,7 @@ static HRESULT reader_parse_reference(xmlreader *reader)
memmove(start+1, ptr+1, len);
buffer->cur = cur + 1;
buffer->written -= (ptr - start) * sizeof(WCHAR);
*(WCHAR*)(buffer->data + buffer->written) = 0;
*start = ch;
}