https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93585

--- Comment #6 from Norman Goldstein <normvcr at telus dot net> ---
Thank you for that.  I hadn't realized there was a -flto flag.  It, indeed,
does warn for the mismatched types.  The flag also causes the notice 

  note: code may be misoptimized unless ‘-fno-strict-aliasing’ is used

Perhaps an oversight, the above notice is emitted even when I do include the
no-strict-aliasing flag:

    gcc -fno-strict-aliasing -o tlink tlink.cpp tlink2.cpp -flto -lstdc++

I really like the -flto option.  Mismatched types could be otherwise hard to
track down.

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