[Bug c++/78330] incorrectly accepts invalid C++ code with shadowed template parameter

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78330

--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> Confirmed, there's not even a warning from -Wshadow:
> 
> $ /usr/local/bin/g++ -c -Wall -Wextra -pedantic -Wshadow 78330.cc
> $

...although, clang++ doesn't say anything either...