[Bug ld/27495] -z start_stop_gc isn't compatible with static glibc

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27495

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Alan Modra from comment #7)
> 
> It is true that --start-stop-gc may break linking with current static glibc,
> a fact that limits --start-stop-gc usefulness.
> 
> BTW, this testcase also shows an interaction between section groups and
> start/stop symbol gc.  If you move the foo reference before the __start_xx
> reference then no magic linker marking of xx sections happens.
> 

It is not just static glibc.  PR 19161 has another usage.

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