explicitly require default construction in value_to for described classes

grisumbras · grisumbras · commit 411b9a9201b8 · 2024-02-08T20:09:12.000+03:00
diff --git a/include/boost/json/detail/value_to.hpp b/include/boost/json/detail/value_to.hpp
@@ -401,6 +401,7 @@ value_to_impl(
     value const& jv,
     Ctx const& ctx )
 {
+    BOOST_STATIC_ASSERT( std::is_default_constructible<T>::value );
     result<T> res;
 
     auto* obj = jv.if_object();

Original file line number	Diff line number	Diff line change
`@@ -401,6 +401,7 @@ value_to_impl(`
`401`	`401`	`value const& jv,`
`402`	`402`	`Ctx const& ctx )`
`403`	`403`	`{`
	`404`	`+ BOOST_STATIC_ASSERT( std::is_default_constructible<T>::value );`
`404`	`405`	`result<T> res;`
`405`	`406`
`406`	`407`	`auto* obj = jv.if_object();`