https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120917

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jason at gcc dot gnu.org

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is a bit of a mess, because the warning used to suggest -fconcepts not
-fconcepts-ts

$ g++12 -std=c++17 auto.cc -c  -pedantic
auto.cc:2:12: warning: use of 'auto' in parameter declaration only available
with '-std=c++20' or '-fconcepts'
    2 | void f (S <auto>);
      |            ^~~~

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