Merge cherrypicks of [2307556, 2307630, 2307631, 2307557, 2307632, 2307656, 2307743, 2307635, 2307799, 2307577, 2307800, 2307707, 2307803, 2307781, 2307773, 2307637, 2307804, 2307618, 2307734, 2307708, 2307805, 2307709, 2307806, 2307820, 2307746, 2307774, 2307839, 2307735, 2307782, 2307808, 2307840, 2307738, 2307783, 2307749, 2307775, 2307860, 2307899, 2307822, 2307823, 2307880, 2307778, 2307825, 2307882, 2307787, 2307919, 2307844, 2307905, 2307883, 2307829, 2307907, 2307832, 2307944, 2307945, 2307911] into nyc-mr2-pixel-monthly-release
Change-Id: I4a01b57e2dacbf0b8d82d5837cf9253740dba025
diff --git a/source/dng_ifd.cpp b/source/dng_ifd.cpp
index 317ebf9..7f22065 100644
--- a/source/dng_ifd.cpp
+++ b/source/dng_ifd.cpp
@@ -3979,7 +3979,7 @@
if (fTileWidth)
{
- return (fImageWidth + fTileWidth - 1) / fTileWidth;
+ return (SafeUint32Sub(SafeUint32Add(fImageWidth, fTileWidth), 1)) / fTileWidth;
}
@@ -3995,7 +3995,7 @@
if (fTileLength)
{
- return (fImageLength + fTileLength - 1) / fTileLength;
+ return (SafeUint32Sub(SafeUint32Add(fImageLength, fTileLength), 1)) / fTileLength;
}
