Yann Collet ac2eba0f1a cli: accept the Linux kernel's legacy end marker ...

The kernel's legacy decoder also stops at a zero Block Compressed Size,
and initramfs builders (mkinitcpio) append these four zero bytes
to delimit concatenated archives.
lz4 passed it to LZ4_decompress_safe() as an empty block,
and failed with "Error 64 : Decoding Failed".

A zero block size now ends the legacy frame,
in both legacy decoders and in --list,
and decoding continues with the next frame, if any.
It was never a valid block : a compressed block is at least 1 byte.

The format spec (v1.6.5) documents it as an extension :
encoders should not produce it, since older decoders reject it.

Fixes #1889, based on #1890 by @agamal026

2026-10-19 19:05:22 -07:00

..

lz4_Block_format.md

doc: state match copy semantics in block format

2026-10-13 22:56:01 -07:00

lz4_Frame_format.md

cli: accept the Linux kernel's legacy end marker

2026-10-19 19:05:22 -07:00

lz4_manual.html

update multiconf.make

2025-04-30 17:06:44 -07:00

lz4frame_manual.html

Add Test Validating Allocated Size Matches Reported Size

2025-06-02 11:06:59 -04:00