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Fix for http://freedesktop.org/bugzilla/show_bug.cgi?id=1416 - Fix Xprt

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PostScript DDX crashes when copying offscreen pixmap content to the
    same pixmap.
This commit is contained in:
Roland Mainz 2004-10-03 15:34:33 +00:00
parent 7b27bf869d
commit 8b2f127ea0
2 changed files with 17 additions and 7 deletions
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10
Xprint/ps/PsGC.c
View File

@ -380,6 +380,16 @@ PsCreateAndCopyGC(DrawablePtr pDrawable, GCPtr pSrc)
{
GCPtr pDst;
if (pSrc == NULL) {
/* https://freedesktop.org/bugzilla/show_bug.cgi?id=1416 ("'x11perf
* -copypixpix500' crashes Xprt's PostScript DDX [PsCreateAndCopyGC"):
* I have no clue whether this is the real fix or just wallpapering
* over the crash (that's why we warn here loudly when this
* happens) ... */
fprintf(stderr, "PsCreateAndCopyGC: pSrc == NULL\n");
return NULL;
}
if ((pDst =
CreateScratchGC(pDrawable->pScreen, pDrawable->depth)) == NULL)
{

14
Xprint/ps/PsPixmap.c
View File

@ -92,7 +92,7 @@ PsCreatePixmap(
{
PixmapPtr pPixmap;
pPixmap = (PixmapPtr)xalloc(sizeof(PixmapRec));
pPixmap = (PixmapPtr)xcalloc(1, sizeof(PixmapRec));
if( !pPixmap) return NullPixmap;
pPixmap->drawable.type = DRAWABLE_PIXMAP;
pPixmap->drawable.class = 0;
@ -108,10 +108,9 @@ PsCreatePixmap(
pPixmap->devKind = 0;
pPixmap->refcnt = 1;
pPixmap->devPrivate.ptr = (PsPixmapPrivPtr)xalloc(sizeof(PsPixmapPrivRec));
pPixmap->devPrivate.ptr = (PsPixmapPrivPtr)xcalloc(1, sizeof(PsPixmapPrivRec));
if( !pPixmap->devPrivate.ptr )
{ xfree(pPixmap); return NullPixmap; }
memset(pPixmap->devPrivate.ptr, 0, sizeof(PsPixmapPrivRec));
return pPixmap;
}
@ -192,11 +191,11 @@ PsGetFreeDisplayBlock(PsPixmapPrivPtr priv)
{
if( disp->nelms>=DPY_BLOCKSIZE && disp->next ) continue;
if( disp->nelms<DPY_BLOCKSIZE ) return(disp);
disp->next = (DisplayListPtr)xalloc(sizeof(DisplayListRec));
disp->next = (DisplayListPtr)xcalloc(1, sizeof(DisplayListRec));
disp->next->next = (DisplayListPtr)0;
disp->next->nelms = 0;
}
disp = (DisplayListPtr)xalloc(sizeof(DisplayListRec));
disp = (DisplayListPtr)xcalloc(1, sizeof(DisplayListRec));
disp->next = (DisplayListPtr)0;
disp->nelms = 0;
priv->dispList = disp;
@ -480,6 +479,7 @@ PsCreateFillElementList(PixmapPtr pix, int *nElms)
for( i=0 ; i<disp->nelms ; i++,elm++ )
{
if( !elm->gc ) continue; /* workaround for https://freedesktop.org/bugzilla/show_bug.cgi?id=1416 */
if( !elm->gc->fgPixel ) continue;
switch(elm->type)
{
@ -498,7 +498,7 @@ PsCreateFillElementList(PixmapPtr pix, int *nElms)
if( (*nElms) )
{
elms = (PsElmPtr)xalloc((*nElms)*sizeof(PsElmRec));
elms = (PsElmPtr)xcalloc(1, (*nElms)*sizeof(PsElmRec));
if( elms )
{
disp = priv->dispList;
@ -568,7 +568,7 @@ PsCloneFillElementList(int nElms, PsElmPtr elms)
int i;
PsElmPtr newElms;
newElms = (PsElmPtr)xalloc(nElms*sizeof(PsElmRec));
newElms = (PsElmPtr)xcalloc(1, nElms*sizeof(PsElmRec));
if( !newElms ) return(newElms);
for( i=0 ; i<nElms ; i++ )
{