Compiler warnings in ubuntu

[nshaheed]

When compiling chuck on WSL (ubuntu with g++ 11.4.0) I get the compiler warnings:

In member function ‘const char* Chuck_Type::c_name()’,
    inlined from ‘long unsigned int Chuck_Op_Registry::add_overload(Chuck_Type*, ae_Operator, Chuck_Type*, Chuck_Func*, ckte_Origin, const string&, long int, long unsigned int)’ at chuck_type.cpp:10780:22,
    inlined from ‘long unsigned int Chuck_Op_Registry::add_overload(Chuck_Type*, ae_Operator, Chuck_Func*, ckte_Origin, const string&, long int, long unsigned int)’ at chuck_type.cpp:10829:30:
chuck_type.cpp:9717:16: warning: ‘this’ pointer is null [-Wnonnull]
 9717 |     return name().c_str();
      |            ~~~~^~
chuck_type.cpp: In member function ‘long unsigned int Chuck_Op_Registry::add_overload(Chuck_Type*, ae_Operator, Chuck_Func*, ckte_Origin, const string&, long int, long unsigned int)’:
chuck_type.cpp:9697:21: note: in a call to non-static member function ‘const string& Chuck_Type::name()’
 9697 | const std::string & Chuck_Type::name()
      |                     ^~~~~~~~~~
In member function ‘const char* Chuck_Type::c_name()’,
    inlined from ‘long unsigned int Chuck_Op_Registry::add_overload(Chuck_Type*, ae_Operator, Chuck_Type*, Chuck_Func*, ckte_Origin, const string&, long int, long unsigned int)’ at chuck_type.cpp:10782:22,
    inlined from ‘long unsigned int Chuck_Op_Registry::add_overload(Chuck_Type*, ae_Operator, Chuck_Func*, ckte_Origin, const string&, long int, long unsigned int)’ at chuck_type.cpp:10829:30:
chuck_type.cpp:9717:16: warning: ‘this’ pointer is null [-Wnonnull]
 9717 |     return name().c_str();
      |            ~~~~^~
chuck_type.cpp: In member function ‘long unsigned int Chuck_Op_Registry::add_overload(Chuck_Type*, ae_Operator, Chuck_Func*, ckte_Origin, const string&, long int, long unsigned int)’:
chuck_type.cpp:9697:21: note: in a call to non-static member function ‘const string& Chuck_Type::name()’
 9697 | const std::string & Chuck_Type::name()
      |                     ^~~~~~~~~~