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sw_engine: ++exception handling

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Prevent the infinite loop in the worst case

@Issue: https://github.com/thorvg/thorvg/issues/2651
This commit is contained in:
Mira Grudzinska 2024-10-03 12:30:34 +02:00 • committed by Hermet Park
parent 03bbfd3183
commit 52def8dc27
1 changed files with 5 additions and 0 deletions
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5
src/renderer/sw_engine/tvgSwRle.cpp
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@ -558,7 +558,12 @@ static void _lineTo(RleWorker& rw, const SwPoint& to)
/* The fundamental value `prod' determines which side and the */
/* exact coordinate where the line exits current cell. It is */
/* also easily updated when moving from one cell to the next. */
size_t idx = 0;
do {
if (++idx > 1000000000) {
TVGERR("SW_ENGINE", "Iteration limit reached during RLE generation. The resulting render may be incorrect.");
break;
}
auto px = diff.x * ONE_PIXEL;
auto py = diff.y * ONE_PIXEL;