[Bug c++/100608] New: [10/11/12 Regression] -Wshadow=compatible-local false positive: function local type declaration shadows variable of different type

[nok.raven at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100608

            Bug ID: 100608
           Summary: [10/11/12 Regression] -Wshadow=compatible-local false
                    positive: function local type declaration shadows
                    variable of different type
           Product: gcc
           Version: 10.3.1
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nok.raven at gmail dot com
  Target Milestone: ---

template <typename> class X {};

void foo()
{
    auto a = X<class a>{};
}

<source>: In function 'void foo()':
<source>:5:22: warning: declaration of 'struct foo()::a' shadows a previous
local [-Wshadow=compatible-local]
    5 |     auto a = X<class a>{};
      |                      ^
<source>:5:10: note: shadowed declaration is here
    5 |     auto a = X<class a>{};
      |          ^

https://godbolt.org/z/hzoro9v3Y