[ros-diffs] [jimtabor] 37223: - Fix WidenPath. Now Area.exe runs and crashes when using real hardware. That is a good thing. We now know our Xorg based region code has problems. It allocates all the memory building PolyPolygon region data.

Author: jimtabor
Date: Thu Nov  6 05:55:08 2008
New Revision: 37223

URL: http://svn.reactos.org/svn/reactos?rev=37223&view=rev
Log:
- Fix WidenPath. Now Area.exe runs and crashes when using real hardware. That is a good
thing. We now know our Xorg based region code has problems. It allocates all the memory
building PolyPolygon region data.

Modified:
    trunk/reactos/subsystems/win32/win32k/objects/path.c

Modified: trunk/reactos/subsystems/win32/win32k/objects/path.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/ob…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/objects/path.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/objects/path.c [iso-8859-1] Thu Nov  6 05:55:08
2008
@@ -1490,9 +1490,9 @@
 FASTCALL
 PATH_WidenPath(DC *dc)
 {
-    INT i, j, numStrokes, penWidth, penWidthIn, penWidthOut, size, penStyle;
+    INT i, j, numStrokes, numOldStrokes, penWidth, penWidthIn, penWidthOut, size,
penStyle;
     BOOL ret = FALSE;
-    PPATH pPath, pNewPath, *pStrokes, pUpPath, pDownPath;
+    PPATH pPath, pNewPath, *pStrokes, *pOldStrokes, pUpPath, pDownPath;
     EXTLOGPEN *elp;
     DWORD obj_type, joint, endcap, penType;
     PDC_ATTR Dc_Attr = dc->pDc_Attr;
@@ -1560,6 +1560,7 @@
         penWidthOut++;
 
     numStrokes = 0;
+    numOldStrokes = 1;
 
     pStrokes    = ExAllocatePoolWithTag(PagedPool, sizeof(PPATH), TAG_PATH);
     pStrokes[0] = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
@@ -1588,8 +1589,11 @@
                 }
                 numStrokes++;
                 j = 0;
-                ExFreePoolWithTag(pStrokes, TAG_PATH);
+                pOldStrokes = pStrokes; // Save old pointer.
                 pStrokes = ExAllocatePoolWithTag(PagedPool, numStrokes * sizeof(PPATH),
TAG_PATH);
+                RtlCopyMemory(pStrokes, pOldStrokes, numOldStrokes * sizeof(PPATH));
+                numOldStrokes = numStrokes; // Save orig count.
+                ExFreePoolWithTag(pOldStrokes, TAG_PATH); // Free old pointer.
                 pStrokes[numStrokes - 1] = ExAllocatePoolWithTag(PagedPool, sizeof(PATH),
TAG_PATH);
 
                 PATH_InitGdiPath(pStrokes[numStrokes - 1]);