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Bug #5516
closedWt4 WServer.C compile error with clang3.8 libc++ boost1.62
Start date:
01/24/2017
Due date:
% Done:
0%
Estimated time:
Description
With preview version of Wt4, github 3.3.6-22-gb3a1dd7b, clang 3.8.1 x86_64, using libc and boost1.62 under Debian stretch/testing produces this error:
src/Wt/WServer.C:222:10: error: no viable conversion from '__bind<bool (Wt::WebController::*)(const Wt::ApplicationEvent &), Wt::WebController *&, Wt::ApplicationEvent &>' to
'const std::function<void ()>'
std::bind(&WebController::handleApplicationEvent,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/v1/functional:1448:5: note: candidate constructor not viable: no known conversion from '__bind<bool (Wt::WebController::*)(const Wt::ApplicationEvent &), Wt::WebController *&,
Wt::ApplicationEvent &>' to 'nullptr_t' for 1st argument
function(nullptr_t) _NOEXCEPT : __f_(0) {}
^
/usr/include/c++/v1/functional:1449:5: note: candidate constructor not viable: no known conversion from '__bind<bool (Wt::WebController::*)(const Wt::ApplicationEvent &), Wt::WebController *&,
Wt::ApplicationEvent &>' to 'const std::__1::function<void ()> &' for 1st argument
function(const function&);
^
/usr/include/c++/v1/functional:1450:5: note: candidate constructor not viable: no known conversion from '__bind<bool (Wt::WebController::*)(const Wt::ApplicationEvent &), Wt::WebController *&,
Wt::ApplicationEvent &>' to 'std::__1::function<void ()> &&' for 1st argument
function(function&&) _NOEXCEPT;
^
/usr/include/c++/v1/functional:1454:41: note: candidate template ignored: disabled by 'enable_if' [with _Fp = std::__1::__bind<bool (Wt::WebController::*)(const Wt::ApplicationEvent &), Wt::WebController *&,
Wt::ApplicationEvent &>]
__callable<_Fp>::value &&
^
src/Wt/WIOService:76:64: note: passing argument to parameter 'function' here
void schedule(int milliSeconds, const std::function<void()>& function);
Attached is a patch that eliminates the compiler error, but which has not had any significant testing (other than trying the feature/broadcast example). It would definitely benefit from a careful review.
Files
Updated by André Jacobs almost 8 years ago
- Status changed from New to Implemented @Emweb
Updated by Roel Standaert almost 8 years ago
- Status changed from Implemented @Emweb to Resolved
Updated by Roel Standaert over 7 years ago
- Status changed from Resolved to Closed
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