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fb: quiet -Wanalyzer-out-of-bounds warnings in fbOverlayCopyWindow()

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Reported in #1817:

xwayland-24.1.6/redhat-linux-build/../fb/fboverlay.c:230:13:
 warning[-Wanalyzer-out-of-bounds]: stack-based buffer over-read
xwayland-24.1.6/redhat-linux-build/../fb/fboverlay.c:233:9:
 warning[-Wanalyzer-out-of-bounds]: stack-based buffer over-read

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This commit is contained in:
Alan Coopersmith 2026-03-29 14:24:17 -07:00
parent 16ca2c7a11
commit 460d008fdd
1 changed files with 2 additions and 0 deletions
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2
fb/fboverlay.c
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@ -26,6 +26,7 @@
#include <dix-config.h>
#endif
#include <assert.h>
#include <stdlib.h>
#include "fb.h"
@ -210,6 +211,7 @@ fbOverlayCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
/*
* Compute the portion of each fb affected by this copy
*/
assert(pScrPriv->nlayers <= FB_OVERLAY_MAX);
for (i = 0; i < pScrPriv->nlayers; i++) {
RegionNull(&layerRgn[i]);
RegionIntersect(&layerRgn[i], &rgnDst,