Package: bzip2 Version: 1.0.6-9 Currently libbz2.so exports all of it's symbols, including private ones. This may cause slower startup time and inadverent dependency on library internals in client code. Attached patch uses -fvisibility=hidden and -Wl,-version-script (whenever they are supported by compiler) to export only symbols which are present in public header. `make check' passed but I haven't tested dependent packages. Code may be ugly, I'd be happy to update it if deemed necessary.
Removed symbols are: BZ2_blockSort BZ2_bsInitWrite BZ2_bz__AssertH__fail BZ2_compressBlock BZ2_crc32Table BZ2_decompress BZ2_hbAssignCodes BZ2_hbCreateDecodeTables BZ2_hbMakeCodeLengths BZ2_indexIntoF BZ2_rNums _edata _end _fini _init _bss_start My system is $ uname -a Linux yugr-VirtualBox 4.13.0-38-generic #43~16.04.1-Ubuntu SMP Wed Mar 14 17:48:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ ls -l /lib/*/libc.so.6 lrwxrwxrwx 1 root root 12 Jan 15 02:51 /lib/x86_64-linux-gnu/libc.so.6 -> libc-2.23.so The issue was found using https://github.com/yugr/ShlibVisibilityChecker -Yury Gribov
0001-Hide-private-symbols.patch
Description: Binary data
