c4358807e2
Example warning: cppdap/include/dap/future.h:172:14: error: implicitly-declared ‘dap::ResponseOrError<dap::StackTraceResponse>& dap::ResponseOrError<dap::StackTraceResponse>::operator=(const dap::ResponseOrError<dap::StackTraceResponse>&)’ is deprecated [-Werror=deprecated-copy] Add missing constructors and assignment operators. This probably adds more than is absolutely necessary, but there's no harm in being thorough.