[llvm-bugs] [Bug 40732] New: Wrong result of TypeName::getFullyQualifiedName(...) for member pointer types with WithGlobalNsPrefix=true

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40732

            Bug ID: 40732
           Summary: Wrong result of TypeName::getFullyQualifiedName(...)
                    for member pointer types with WithGlobalNsPrefix=true
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: simon.schroeder at tu-dortmund.de
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    neeilans at live.com, richard-llvm at metafoo.co.uk

Hi,

Description:
If a pointer to member type (MemberPointerType) is passed to
TypeName::getFullyQualifiedName(...) with WithGlobalNsPrefix set to true, the
resulting type string will not contain the global namespace specifier ("::").
More precisely, the global namespace specifier is missing for the member's type
as well as for the class' type. Thus, WithGlobalNsPrefix=true does not work for
pointer to member types. 

Example:
Consider the following code:
  namespace N {
    class C {
     public:
      int m1;
      C* m2;
    };
    void f() {
      int C::*mp1;
      C* C::*mp2;
    }
  }
  int main() {
    N::f();
  }
Now, when looking at the variables' types:
 mp1's type:  
  Expected (fully qualified type string with global namespace specifier):
    int ::N::C::*
  getFullyQualifiedName's result:
    int N::C::*

 mp2's type:  
  Expected (fully qualified type string with global namespace specifier):
    ::N::C *::N::C::*
  getFullyQualifiedName's result:
    N::C *N::C::*

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