On Thu, 5 Jul 2018 at 02:14, snow_xmas wrote: > > Hello. > The source in the attachment can not be compiled, because there is a > variable in the lambda-introducer does not have a copy-constructor, but have > a move-constructor. When a function object constructed by a lambda-expression > like this, the compiler will report this error. And I have try it under gcc > version 5.4, 7,3 and 8.1, the same error will be reported by all these > versions of gcc. However, the lambda-expression can be moved normally to > std::async, std::packaged_task, except std::function. So I believe it's a bug > of gcc
No, as explained by Lui Hao. > The classes which is prohibited to copy but allowed to move is necessary > in some condition, like unique_ptr. Please give me a solution for this error. This is off-topic on this mailing list, please use gcc-h...@gcc.gnu.org next time.
