[Bug 51899] 16-bit Collins Dictionary has black background.
WineHQ Bugzilla
wine-bugs at winehq.org
Thu Oct 21 08:04:54 CDT 2021
https://bugs.winehq.org/show_bug.cgi?id=51899
--- Comment #3 from O. Nykyforchyn <oleh.nyk at gmail.com> ---
I localized a narrow place in dlls/gdi32/dc. There is a function
DC_ATTR *get_dc_attr( HDC hdc )
{
DWORD type = gdi_handle_type( hdc );
DC_ATTR *dc_attr;
if ((type & 0x1f0000) != NTGDI_OBJ_DC || !(dc_attr = get_gdi_client_ptr(
hdc, 0 )))
{
SetLastError( ERROR_INVALID_HANDLE );
return NULL;
}
return dc_attr->disabled ? NULL : dc_attr;
}
If the first of two OR'ed conditions is dropped:
DC_ATTR *get_dc_attr( HDC hdc )
{
DWORD type = gdi_handle_type( hdc );
DC_ATTR *dc_attr;
TRACE("Got type %x\n", type);
if (!(dc_attr = get_gdi_client_ptr( hdc, 0 )))
{
SetLastError( ERROR_INVALID_HANDLE );
return NULL;
}
return dc_attr->disabled ? NULL : dc_attr;
}
then background is OK. Splitting like
DC_ATTR *get_dc_attr( HDC hdc )
{
DWORD type = gdi_handle_type( hdc );
DC_ATTR *dc_attr;
if ((type & 0x1f0000) != NTGDI_OBJ_DC)
{
SetLastError( ERROR_INVALID_HANDLE );
return NULL;
}
if (!(dc_attr = get_gdi_client_ptr( hdc, 0 )))
{
SetLastError( ERROR_INVALID_HANDLE );
return NULL;
}
return dc_attr->disabled ? NULL : dc_attr;
}
does not help. Seems like a compiler bug, maybe in oplimization or inlining.
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