C++, properly look up constructors.

Fixes sphinx-doc/sphinx#2666.

CHANGES

@@ -26,6 +26,7 @@ Bugs fixed
 * #2639: Sphinx now bundles iftex.sty
 * Failed to build PDF with framed.sty 0.95
 * Sphinx now bundles needspace.sty
+* #2666: C++, properly look up nested names involving constructors.
 
 
 Release 1.4.3 (released Jun 5, 2016)

sphinx/domains/cpp.py

@@ -2660,6 +2660,10 @@ class Symbol(object):
                 if symbol is None:
                     # TODO: maybe search without template args
                     return None
+                # We have now matched part of a nested name, and need to match more
+                # so even if we should matchSelf before, we definitely shouldn't
+                # even more. (see also issue #2666)
+                matchSelf = False
             parentSymbol = symbol
         assert False  # should have returned in the loop
 
@@ -4114,6 +4118,7 @@ class CPPDomain(Domain):
                                    matchSelf=True)
         if s is None or s.declaration is None:
             return None, None
+
         declaration = s.declaration
         fullNestedName = s.get_full_nested_name()
         name = text_type(fullNestedName).lstrip(':')