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Prevent 32-bit multiplication overflow

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Basically impossible to achieve, but just in case
This commit is contained in:
Rangi
2026-07-07 17:02:46 -04:00
parent d94d0bcc2f
commit 5aedf31b46
2 changed files with 5 additions and 4 deletions
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src/gfx/process.cpp
+2 -2
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@@ -1146,10 +1146,10 @@ continue_visiting_tiles:;
uint32_t const nbTilesH = image.png.height / 8, nbTilesW = image.png.width / 8;
// Check the tile count
if (uint32_t nbTiles = nbTilesW * nbTilesH;
if (uint64_t nbTiles = nbTilesW * nbTilesH;
nbTiles > options.maxNbTiles[0] + options.maxNbTiles[1]) {
fatal(
"Image contains %" PRIu32 " tiles, exceeding the limit of %" PRIu16 " + %" PRIu16,
"Image contains %" PRIu64 " tiles, exceeding the limit of %" PRIu16 " + %" PRIu16,
nbTiles,
options.maxNbTiles[0],
options.maxNbTiles[1]