C++: fix built-in code model to work with shared_ptr on MSVC 2017

These changes target Find Usages feature to work with shared_ptr.
Improve libs/3rdparty/cplusplus and plugins/cplusplus:
parse __declspec() attribute,
call to variadic function template without specified template arguments,
if constexpr,
c++11 attributes [[value]],
function templates with default parameters,
resolve order for function vs template with default parameter,
template operator->() with default arguments,
template specialization with numeric values,
find best partial specialization,
fix partial specialization for non-first specialized argument

Fixes: QTCREATORBUG-7866
Fixes: QTCREATORBUG-20781
Fixes: QTCREATORBUG-22857
Fixes: QTCREATORBUG-17825
Change-Id: I31a080f7729edfb2ee9650f1aff48daeba5a673b
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Nikolai Kosjar <pinaceae.pinus@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/plugins/cpptools/cpppointerdeclarationformatter.cpp b/src/plugins/cpptools/cpppointerdeclarationformatter.cpp
index 82df823af1..391e5b2a82 100644
--- a/src/plugins/cpptools/cpppointerdeclarationformatter.cpp
+++ b/src/plugins/cpptools/cpppointerdeclarationformatter.cpp
@@ -98,12 +98,13 @@ static unsigned firstTypeSpecifierWithoutFollowingAttribute(
         case T_TYPEDEF:
         case T_CONSTEXPR:
         case T___ATTRIBUTE__:
+        case T___DECLSPEC:
             continue;
         default:
             // Check if attributes follow
             for (unsigned i = index; i <= endToken; ++i) {
                 const int tokenKind = translationUnit->tokenKind(i);
-                if (tokenKind == T___ATTRIBUTE__)
+                if (tokenKind == T___ATTRIBUTE__ || tokenKind == T___DECLSPEC)
                     return 0;
             }
             *found = true;