Nested type names clush in cppcheck analysis, causing misdetections and false possitives

[Tal]

I have been able to reproduce an error happened in our company with this checker.
Using the online demo (https://cppcheck.sourceforge.io/demo/), for this code that declare the two nested structs A::Foo and B::Foo, cppcheck seems to be confused about the definition of Foo:

#include <vector>
#include <iostream>

Class A {
public:
  struct Foo { int a; int z; };

  void foo_adder();

  void print_all() {
    for (const auto& foo : m_foos) {
       std::cout << foo.a << foo.z << std::endl;
    }
  }

private:
  std::vector<Foo> m_foos;
};


Class B {
public:
  struct Foo { int b; int z; };

  void foo_adder();

  void print_all() {
    for (const auto& foo : m_foos) {
       std::cout << foo.b << foo.z << std::endl;
    }
  }

private:
  std::vector<Foo> m_foos;
};


void A::foo_adder() {
  Foo foo;
  foo.a = 1;
  foo.z = 3;
  m_foos.push_back(foo);
}

void B::foo_adder() {
  B::Foo foo;
  foo.b = 2;
  foo.z = 3;
  m_foos.push_back(foo);
}

Yields:

Cppcheck 2.10

[test.cpp:23]: (style) struct member 'Foo::b' is never used.
[test.cpp:23]: (style) struct member 'Foo::z' is never used.

Done!

[CHR]

I can't reproduce this with 2.15dev.

[Tal]

Weird... I was testing this privately in V2.14, and the online demo with this toy example is V2.10.

I will try to check this in a more updated version.

[Tal]

I also cannot reproduce it now