Re: [Boost-bugs] [Boost C++ Libraries] #10196: thread_specific_ptr does not support void*

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10196: thread_specific_ptr does not support void*
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-07-23 21:53:11

#10196: thread_specific_ptr does not support void*
--------------------------------------+----------------------
  Reporter:  Zhihao Yuan <lichray@…>  |      Owner:  viboes
      Type:  Bugs                     |     Status:  assigned
 Milestone:  To Be Determined         |  Component:  thread
   Version:  Boost 1.54.0             |   Severity:  Problem
Resolution:                           |   Keywords:
--------------------------------------+----------------------

Comment (by Zhihao Yuan <lichray@…>):

 Replying to [comment:5 viboes]:
 > Well it seems that this compiles, but I'm getting these warnings
 >
 >
 > {{{
 > clang-darwin.compile.c++
 ../../../bin.v2/libs/thread/test/test_tss_lib.test/clang-
 darwin-3.2_11/debug/threading-multi/test_tss.o
 > In file included from test_tss.cpp:13:
 > ../../../boost/thread/tss.hpp:42:17: warning: cannot delete expression
 with pointer-to-'void' type 'void *'
 >                 delete static_cast<T*>(data);
 >                 ^      ~~~~~~~~~~~~~~~~~~~~~
 > ../../../boost/thread/pthread/thread_heap_alloc.hpp:17:24: note: in
 instantiation of member function
 'boost::thread_specific_ptr<void>::delete_data::operator()' requested here
 >             return new T();
 >                        ^
 > ../../../boost/thread/tss.hpp:68:21: note: in instantiation of function
 template specialization
 'boost::detail::heap_new<boost::thread_specific_ptr<void>::delete_data>'
 requested here
 >
 cleanup(detail::heap_new<delete_data>(),detail::do_heap_delete<delete_data>())
 >                     ^
 > test_tss.cpp:51:34: note: in instantiation of member function
 'boost::thread_specific_ptr<void>::thread_specific_ptr' requested here
 > boost::thread_specific_ptr<void> tss_void;
 >                                  ^
 > 1 warning generated.
 >
 > }}}

 C++11's default_delete is ill-formed for incomplete types including void.

 It's boost::shared_ptr's job to decide whether deleting void* is OK or
 not.

 >
 > How do you want to use it?

 Many C APIs expose their interface types with an opaque pointer; void* is
 a
 choice.  You'll need to use a customized deleter calling the C API's
 cleanup
 function.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10196#comment:6>
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