fixed docstring generation for void pointers

example/example14.cpp

@@ -19,7 +19,7 @@ public:
 };
 
 /* IMPORTANT: Disable internal pybind11 translation mechanisms for STL data structures */
-PYBIND11_MAKE_OPAQUE(StringList); 
+PYBIND11_MAKE_OPAQUE(StringList);
 
 void init_ex14(py::module &m) {
     py::class_<StringList>(m, "StringList")

example/example14.py

@@ -8,6 +8,7 @@ from example import ClassWithSTLVecProperty
 from example import return_void_ptr, print_void_ptr
 from example import return_null_str, print_null_str
 from example import return_unique_ptr
+from example import Example1
 
 #####
 
@@ -32,6 +33,7 @@ print_opaque_list(cvp.stringList)
 #####
 
 print_void_ptr(return_void_ptr())
+print_void_ptr(Example1()) # Should also work for other C++ types
 
 print(return_null_str())
 print_null_str(return_null_str())

include/pybind11/cast.h

@@ -398,6 +398,7 @@ public:
 
     template <typename T> using cast_op_type = void*&;
     operator void *&() { return value; }
+    static PYBIND11_DESCR name() { return _("capsule"); }
 private:
     void *value = nullptr;
 };

include/pybind11/functional.h

@@ -17,6 +17,7 @@ NAMESPACE_BEGIN(detail)
 
 template <typename Return, typename... Args> struct type_caster<std::function<Return(Args...)>> {
     typedef std::function<Return(Args...)> type;
+    typedef typename std::conditional<std::is_same<Return, void>::value, void_type, Return>::type retval_type;
 public:
     bool load(handle src_, bool) {
         src_ = detail::get_function(src_);
@@ -39,7 +40,7 @@ public:
 
     PYBIND11_TYPE_CASTER(type, _("function<") +
             type_caster<std::tuple<Args...>>::name() + _(" -> ") +
-            type_caster<typename intrinsic_type<Return>::type>::name() +
+            type_caster<retval_type>::name() +
             _(">"));
 };