When handling internal function pointers, information loss can occur.

[Subway2023]

Describe the issue:

When handling internal function pointers, information about function visibility (internal, external) can be lost.

Code example to reproduce the issue:

contract C {
    function() internal returns (uint) a;
}

Version:

0.10.3

Relevant log output:

The type of a is as follows:
variable.type: function() returns(uint256)

However, I think it should be function() internal returns(uint256)