zlib 1.3 Release Notes

August 18, 2023

Version 1.3 has these key changes:

• Building using K&R (pre-ANSI) function definitions is no longer supported.
• Fixed a bug in deflateBound() for level 0 and memLevel 9.
• Fixed a bug when gzungetc() is used immediately after gzopen().
• Fixed a bug when using gzflush() with a very small buffer.
• Fixed a crash when gzsetparams() is attempted for a transparent write.
• Fixed test/example.c to work with FORCE_STORED.
• Fixed minizip to allow it to open an empty zip file.
• Fixed reading disk number start on zip64 files in minizip.
• Fixed a logic error in minizip argument processing.