questions about name mangling in C++
- by Tim
I am trying to learn and understand name mangling in C++. Here are some questions:
(1) From devx
When a global function is overloaded, the generated mangled name for each overloaded version is unique. Name mangling is also applied to variables. Thus, a local variable and a global variable with the same user-given name still get distinct mangled names.
Are there other examples that are using name mangling, besides overloading functions and same-name global and local variables ?
(2) From Wiki
The need arises where the language allows different entities to be named with the same identifier as long as they occupy a different namespace (where a namespace is typically defined by a module, class, or explicit namespace directive).
I don't quite understand why name mangling is only applied to the cases when the identifiers belong to different namespaces, since overloading functions can be in the same namespace and same-name global and local variables can also be in the same space. How to understand this?
Do variables with same name but in different scopes also use name mangling?
(3) Does C have name mangling? If it does not, how can it deal with the case when some global and local variables have the same name? C does not have overloading functions, right?
Thanks and regards!
