[Bug c++/57622] -W -Wall -Werror -Wno-unused gives Wunused-parameter warning

[lucier at math dot purdue.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57622

lucier at math dot purdue.edu changed:

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                 CC|                            |lucier at math dot purdue.edu

--- Comment #1 from lucier at math dot purdue.edu ---
This bug has bitten me, too.

I built and tested the current mainline with the idea that I'd try to implement
the suggested fix, but this is the first time I've looked at any of the
autogenerated files and I'm afraid that I have no clue what's going on.

Brad