False positive misc-confusable-identifier: confusing template argument and function from different classes

[carlosgalvezp]

Getting the following on latest trunk:

#include <gtest/gtest.h>

struct Foo
{
    void l();
};

[source>:5:10: warning: 'l' is confusable with 'I' [misc-confusable-identifiers]]
    void l();
         ^
/opt/compiler-explorer/libs/googletest/trunk/googletest/include/gtest/internal/gtest-param-util.h:842:23: note: other declaration found here
  template <size_t... I>
                      ^

Repro on Compiler Explorer

[llvmbot]

@llvm/issue-subscribers-clang-tidy

[carlosgalvezp]

Reduced self-contained example:

template <typename T>
struct Foo 
{};

template <typename T, int... I>
struct Bar : Foo<T> 
{};

struct Baz
{
    void l();
};

https://godbolt.org/z/do78n3ahh

[PiotrZSL]

Need to be re-verified but example no longer produce warning on trunk.

[PiotrZSL]

Fixed in LLVM 17. Somehow by 2a84c635f2a1dcb4546a5d751a32eac24103c7e6.