since commits 2907afb8db and
6fc30c2493, __dls2 is no longer called
via symbol lookup, but instead uses relative addressing that needs to
be resolved at link time. on some linker versions, and/or if
-Bsymbolic-functions is not used, the linker may leave behind a
dynamic relocation, which is not suitable for bootstrapping the
dynamic linker, if the reference to __dls2 is marked hidden but the
definition is not actually hidden. correcting the definition to use
hidden visibility fixes the problem.
the static-PIE entry point rcrt1 was likewise affected and is also
fixed by this patch.
Rich Felker
bc9b6ea0df