Intel IPP-patched bzip2 library generates wrong file during compression with level 1

Valentyn · ‎10-26-2021

Intel IPP-patched bzip2 library returns BZ_DATA_ERROR on decompression.

Attached example creates data in memory, compresses it using compression level 1 (compression succeeds), and decompresses (decompression fails).

bz2 file that was compressed using IPP-patched version of bz2 library cannot be decompressed even with original (non-patched) version of bz2 library, so it seems that the issue is in compression.

Steps to reproduce:

# Modify the following paths in `bzip2_ipp_example/CMakeLists.txt`:
IPPROOT
BZIP2_ROOT_WITH_IPP
BZIP2_ROOT_WITHOUT_IPP

# Clean
rm -rf build

# Configure
cmake -B build .

# Build
cmake --build build -j

# Run
build/problem4_noipp/problem4_noipp
build/problem4_ipp/problem4_ipp

Intel IPP version: 2021.4

bzip2 library version: 1.0.8

OS: Ubuntu 21.10 (Impish Indri)

Compiler: GCC 8.5.0

C++ standard: C++17

Gennady_F_Intel · ‎10-26-2021

Valentyn,

Thanks for bringing this topic here. The problem has been confirmed and escalated. We will keep this thread updated with the status of this problem.