Hi!
JFYI, I've just ran into shortcoming of libc++ from 10-RELEASE when used
with clang 3.4 from ports:
---
% cat test.cc
#include iostream
#include functional
int main() {
std::functionvoid() f = []() { std::cerr test\n; };
return 0;
}
% clang++ -std=c++11 test.cc ---
% clang++34 -std=c++11 test.cc ---
In file included from test.cc:1:
In file included from /usr/include/c++/v1/iostream:38:
In file included from /usr/include/c++/v1/ios:216:
In file included from /usr/include/c++/v1/__locale:15:
In file included from /usr/include/c++/v1/string:434:
In file included from /usr/include/c++/v1/algorithm:627:
In file included from /usr/include/c++/v1/memory:603:
/usr/include/c++/v1/tuple:320:11: error: rvalue reference to type 'lambda at
test.cc:5:28' cannot bind to lvalue of type 'lambda at test.cc:5:28'
: value(__t.get())
^ ~
/usr/include/c++/v1/tuple:444:8: note: in instantiation of member function
'std::__1::__tuple_leaf0, lambda at test.cc:5:28 , false::__tuple_leaf'
requested here
struct __tuple_impl__tuple_indices_Indx..., _Tp...
^
/usr/include/c++/v1/functional:1286:26: note: in instantiation of member
function 'std::__1::__function::__funclambda at test.cc:5:28,
std::__1::allocatorlambda at test.cc:5:28 , void ()::__func' requested here
::new (__f_) _FF(_VSTD::move(__f));
^
test.cc:5:28: note: in instantiation of function template specialization
'std::__1::functionvoid ()::functionlambda at test.cc:5:28 ' requested
here
std::functionvoid() f = []() { std::cerr test\n; };
^
In file included from test.cc:1:
In file included from /usr/include/c++/v1/iostream:38:
In file included from /usr/include/c++/v1/ios:216:
In file included from /usr/include/c++/v1/__locale:15:
In file included from /usr/include/c++/v1/string:434:
In file included from /usr/include/c++/v1/algorithm:627:
In file included from /usr/include/c++/v1/memory:603:
/usr/include/c++/v1/tuple:321:10: error: static_assert failed Can not copy a
tuple with rvalue reference member
{static_assert(!is_rvalue_reference_Hp::value, Can not copy a tuple
with rvalue reference member);}
^
/usr/include/c++/v1/tuple:320:11: error: rvalue reference to type
'allocator[...]' cannot bind to lvalue of type 'allocator[...]'
: value(__t.get())
^ ~
/usr/include/c++/v1/tuple:444:8: note: in instantiation of member function
'std::__1::__tuple_leaf0, std::__1::allocatorlambda at test.cc:5:28 ,
false::__tuple_leaf' requested here
struct __tuple_impl__tuple_indices_Indx..., _Tp...
^
/usr/include/c++/v1/functional:1294:34: note: in instantiation of member
function 'std::__1::__function::__funclambda at test.cc:5:28,
std::__1::allocatorlambda at test.cc:5:28 , void ()::__func' requested here
::new (__hold.get()) _FF(_VSTD::move(__f), allocator_Fp(__a));
^
test.cc:5:28: note: in instantiation of function template specialization
'std::__1::functionvoid ()::functionlambda at test.cc:5:28 ' requested
here
std::functionvoid() f = []() { std::cerr test\n; };
^
In file included from test.cc:1:
In file included from /usr/include/c++/v1/iostream:38:
In file included from /usr/include/c++/v1/ios:216:
In file included from /usr/include/c++/v1/__locale:15:
In file included from /usr/include/c++/v1/string:434:
In file included from /usr/include/c++/v1/algorithm:627:
In file included from /usr/include/c++/v1/memory:603:
/usr/include/c++/v1/tuple:321:10: error: static_assert failed Can not copy a
tuple with rvalue reference member
{static_assert(!is_rvalue_reference_Hp::value, Can not copy a tuple
with rvalue reference member);}
^
4 errors generated.
---
The cause: http://llvm.org/bugs/show_bug.cgi?id=17798, was fixed in
libc++ r194154. We probably need to update libc++ or at least backport
this into stable branches if we want to support clang 3.4 in ports.
--
Dmitry Marakasov . 55B5 0596 FF1E 8D84 5F56 9510 D35A 80DD F9D2 F77D
amd...@amdmi3.ru ..: jabber: amd...@jabber.ruhttp://www.amdmi3.ru
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