id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11266	boost::packaged_task has invalid variadic signature	Alexander Karzhenkov <karzhenkov@…>	viboes	"The following code doesn't compile:
{{{
#define BOOST_THREAD_VERSION 4

#include <boost/thread/future.hpp>

void func(int) { }

int main()
{
	boost::packaged_task<void(int)> task{func};
}
}}}
Compilation error is caused by the misuse of `BOOST_THREAD_RV_REF` macro. Constructor expects argument of type `void(int&&)` and can't accept `func`. There is similar issue with `operator ()`. The file `future.hpp` needs to be patched:
{{{
diff --git a/include/boost/thread/future.hpp b/include/boost/thread/future.hpp
index e6e2236..e477535 100644
--- a/include/boost/thread/future.hpp
+++ b/include/boost/thread/future.hpp
@@ -2715,3 +2715,3 @@
 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
-              typedef R (*CallableType)(BOOST_THREAD_RV_REF(ArgTypes) ... );
+              typedef R (*CallableType)(ArgTypes ... );
 #else
@@ -2946,3 +2946,3 @@
 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
-            typedef void (*CallableType)(BOOST_THREAD_RV_REF(ArgTypes)...);
+            typedef void (*CallableType)(ArgTypes...);
 #else
@@ -3269,3 +3269,3 @@
 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
-        void operator()(BOOST_THREAD_RV_REF(ArgTypes)... args) {
+        void operator()(ArgTypes... args) {
             if(!task) {
}}}"	Bugs	closed	Boost 1.60.0	thread	Boost 1.58.0	Problem	fixed	packaged_task, variadic