https://bugs.kde.org/show_bug.cgi?id=369842

            Bug ID: 369842
           Summary: wrong tooltip shows up for complex types declared with
                    decltype
           Product: kdevelop
           Version: git master
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Language Support: CPP (Clang-based)
          Assignee: kdevelop-bugs-n...@kde.org
          Reporter: kitanat...@gmail.com

when the expression in decltype does not result in a simple type the entire
expression is shown as type instead of the deduced one

Reproducible: Always

Steps to Reproduce:
1. open a c++ file
2. paste simple code sample:
struct N { int a; };
struct M { N z; };
decltype(M::z) i;
3. hover over i

Actual Results:  
tooltip says type of i is decltype(M::z)

Expected Results:  
tooltip should say type of i is N

code completion works for the wrongly showed type

a second sample of code for something more complex:
#include <vector>
decltype(std::declval<std::vector<char>>().begin()) x;

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