andreacavalli/xserver-multidpi
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

dixfonts: Don't overwrite local c variable until new_closure is safely initialized.

Browse Source 
Signed-off-by: Alan Hourihane <alanh@vmware.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
This commit is contained in:
Alan Hourihane 2011-10-04 19:42:46 -07:00 committed by Jeremy Huddleston
parent 6378d0233d
commit 7a33c5b934
1 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
dix/dixfonts.c
View File

@ -1302,31 +1302,30 @@ doPolyText(ClientPtr client, PTclosurePtr c)
goto bail;
}
*new_closure = *c;
c = new_closure;
len = c->endReq - c->pElt;
c->data = malloc(len);
if (!c->data)
len = new_closure->endReq - new_closure->pElt;
new_closure->data = malloc(len);
if (!new_closure->data)
{
free(c);
free(new_closure);
err = BadAlloc;
goto bail;
}
memmove(c->data, c->pElt, len);
c->pElt = c->data;
c->endReq = c->pElt + len;
memmove(new_closure->data, new_closure->pElt, len);
new_closure->pElt = new_closure->data;
new_closure->endReq = new_closure->pElt + len;
/* Step 2 */
pGC = GetScratchGC(c->pGC->depth, c->pGC->pScreen);
pGC = GetScratchGC(new_closure->pGC->depth, new_closure->pGC->pScreen);
if (!pGC)
{
free(c->data);
free(c);
free(new_closure->data);
free(new_closure);
err = BadAlloc;
goto bail;
}
if ((err = CopyGC(c->pGC, pGC, GCFunction |
if ((err = CopyGC(new_closure->pGC, pGC, GCFunction |
GCPlaneMask | GCForeground |
GCBackground | GCFillStyle |
GCTile | GCStipple |
@ -1337,15 +1336,16 @@ doPolyText(ClientPtr client, PTclosurePtr c)
Success)
{
FreeScratchGC(pGC);
free(c->data);
free(c);
free(new_closure->data);
free(new_closure);
err = BadAlloc;
goto bail;
}
c = new_closure;
origGC = c->pGC;
c->pGC = pGC;
ValidateGC(c->pDraw, c->pGC);
ClientSleep(client, (ClientSleepProcPtr)doPolyText, c);
/* Set up to perform steps 3 and 4 */