[Bug ld/24836] --as-needed leaves unused direct dependencies

[amodra at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24836

--- Comment #7 from Alan Modra <amodra at gmail dot com> ---
> Maybe garbage collection (-Wl,--gc-sections) happens after
> effect of "-Wl,--as-needed"?

It does, and that might be why you have shared libraries seen as needed before
garbage collection runs.  If you link with -Wl,-Map,mapfilename then inspecting
mapfilename will show you which symbol caused each shared library to be needed.

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