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fixed memory leak in REGION_XorRegion()

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svn path=/trunk/; revision=6117
This commit is contained in:
Thomas Bluemel 2003-09-23 19:33:29 +00:00
parent 0b9c284361
commit 3ec27cec15
1 changed files with 31 additions and 27 deletions
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58
reactos/subsys/win32k/objects/region.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
/* $Id: region.c,v 1.36 2003/09/09 09:39:21 gvg Exp $ */ /* $Id: region.c,v 1.37 2003/09/23 19:33:29 weiden Exp $ */
#undef WIN32_LEAN_AND_MEAN #undef WIN32_LEAN_AND_MEAN
#include <windows.h> #include <windows.h>
#include <ddk/ntddk.h> #include <ddk/ntddk.h>
@ -1329,36 +1329,40 @@ static void FASTCALL REGION_SubtractRegion(ROSRGNDATA *regD, ROSRGNDATA *regM,
static void FASTCALL REGION_XorRegion(ROSRGNDATA *dr, ROSRGNDATA *sra, static void FASTCALL REGION_XorRegion(ROSRGNDATA *dr, ROSRGNDATA *sra,
ROSRGNDATA *srb) ROSRGNDATA *srb)
{ {
HRGN htra, htrb; HRGN htra, htrb;
ROSRGNDATA *tra, *trb; ROSRGNDATA *tra, *trb;
if ((! (htra = RGNDATA_AllocRgn(sra->rdh.nCount + 1))) ||
(! (htrb = RGNDATA_AllocRgn(srb->rdh.nCount + 1))))
return;
tra = RGNDATA_LockRgn( htra );
if( !tra ){
NtGdiDeleteObject( htra );
NtGdiDeleteObject( htrb );
return;
}
trb = RGNDATA_LockRgn( htrb );
if( !trb ){
RGNDATA_UnlockRgn( htra );
NtGdiDeleteObject( htra );
NtGdiDeleteObject( htrb );
return;
}
REGION_SubtractRegion(tra,sra,srb);
REGION_SubtractRegion(trb,srb,sra);
REGION_UnionRegion(dr,tra,trb);
RGNDATA_UnlockRgn( htra );
RGNDATA_UnlockRgn( htrb );
if(!(htra = RGNDATA_AllocRgn(sra->rdh.nCount + 1)))
return;
if(!(htrb = RGNDATA_AllocRgn(srb->rdh.nCount + 1)))
{
NtGdiDeleteObject( htra );
return;
}
tra = RGNDATA_LockRgn( htra );
if(!tra ){
NtGdiDeleteObject( htra ); NtGdiDeleteObject( htra );
NtGdiDeleteObject( htrb ); NtGdiDeleteObject( htrb );
return; return;
}
trb = RGNDATA_LockRgn( htrb );
if( !trb ){
RGNDATA_UnlockRgn( htra );
NtGdiDeleteObject( htra );
NtGdiDeleteObject( htrb );
return;
}
REGION_SubtractRegion(tra,sra,srb);
REGION_SubtractRegion(trb,srb,sra);
REGION_UnionRegion(dr,tra,trb);
RGNDATA_UnlockRgn( htra );
RGNDATA_UnlockRgn( htrb );
NtGdiDeleteObject( htra );
NtGdiDeleteObject( htrb );
return;
} }