# Changes in TIFF v3.7.0beta2

References
Current Version | v3.7.0beta2 (tag Release-v3-7-0beta2)
Previous Version | v3.7.0beta
Master Download Site | https://download.osgeo.org/libtiff/
Master HTTP Site | http://www.simplesystems.org/libtiff/

This document describes the changes made to the software between the previous and current versions (see above). If you don’t find something listed here, then it was not done in this timeframe, or it was not considered important enough to be mentioned. The following information is located here:

## Major changes

- The code has been reviewed by Dmitry Levin: added checks for values, returned by the space allocation functions, fixed problems with the possible integer overflows.

## Software configuration changes

- Several fixes in the test suite.

## Library changes

- Preliminary support for BigTIFF files: now libtiff can recognize and reject to open such images. ;-)

- `libtiff/tif_dirinfo.c`: changed type of XMLPacket (tag 700) to `TIFF_BYTE` instead of `TIFF_UNDEFINED` to comply with the info in the Adobe XMP Specification.

- Added many checks for integer overflow and for successful space allocations in the different parts of library. Code review completed by Dmitry V. Levin.

- `libtiff/tiffio.h`, `libtiff/tif_compress.c`: Added `TIFFGetConfiguredCODECs()` function to get the list of configured codecs.

## Tools changes

- `tiff2bw`: Write `ImageWidth`/`ImageHeight` tags to output file, as noted by Gennady Khokhorin.

## Contributed software changes

- No changes.

## LZW compression kit changes

- This one is not longer needed.