[Bug c++/66472] -Wshadow gets confused by using statements in template classes

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66472

--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Gael Guennebaud from comment #0)
> As suggested there https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57709#c16, I
> tried to break at the call to warning_at to give you more input, but with no
> luck, as if warning_at was not called at all. (I also tried to break at any
> *warning* symbol with same result).

I compile with g++ -wrapper gdb,--args ... where this gcc was compile with -O0
-g. Breaking on warning_at shows that member is a using_decl.