[llvm-bugs] [Bug 44699] New: Members of nested classes incorrectly shadow template parameters of member functions of the nested class

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44699

            Bug ID: 44699
           Summary: Members of nested classes incorrectly shadow template
                    parameters of member functions of the nested class
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: Luna+llvmbugs at baguette.management
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

Example code:

class Outer {
    class Inner {
        int x;

        template <int x>
        void static check() {
            static_assert(x < 10);
        }
    };
};

Produces the error

<source>:7:27: error: invalid use of member 'x' in static member function

            static_assert(x < 10);

                          ^

(Compiler explorer: https://gcc.godbolt.org/z/pC_Mx8)

x in check() should refer to the template parameter but apparently refers to
the member variable of the same name. If class Inner is declared at global
scope (i.e. not nested in class Outer), x correctly refers to the template
parameter instead of the member variable.

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