lib/58841: liblzma leaks private symbols

[campbell+netbsd%mumble.net@localhost]

>Number:         58841
>Category:       lib
>Synopsis:       liblzma leaks private symbols
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Nov 21 23:05:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, 10, 9, ...
>Organization:
The NetBXZ Foundasymbol
>Environment:
>Description:
Upstream builds liblzma.so with -fvisibility=hidden but we don't, so various library-internal symbols -- named lzma_* to avoid namespace collisions -- are exported when they probably shouldn't be, like lzma_rc_prices.
>How-To-Repeat:
nm, code inspection
>Fix:
use -fvisibility=hidden, update expected symbols list, bump major