[skip ci] implement trivial copyable type for deque's copy constructor

trcrsired · trcrsired · commit 236e77c3baca · 2026-01-07T00:02:03.000+08:00
diff --git a/include/fast_io_dsal/impl/deque.h b/include/fast_io_dsal/impl/deque.h
@@ -904,7 +904,8 @@ inline constexpr void deque_clone_trivial_impl(dequecontroltype &controller, deq
 		controller.front_block.end_ptr =
 			::fast_io::freestanding::non_overlapped_copy(fromcontroller.front_block.curr_ptr,
 														 fromcontroller.front_block.end_ptr,
-														 pos + controller.front_block.begin_ptr);
+														 (controller.front_block.curr_ptr =
+															  pos + controller.front_block.begin_ptr));
 		++destit;
 		for (begin_ptrtype *it{front_controller_ptr + 1}, *ed{back_controller_ptr}; it != ed; ++it)
 		{
diff --git a/tests/0026.container/0003.deque/constructors/copy_constructor.cc b/tests/0026.container/0003.deque/constructors/copy_constructor.cc
@@ -24,7 +24,8 @@ inline void test_copy_constructor()
 
     // Copy construct
     ::fast_io::deque<T> dq2(dq);
-
+    ::fast_io::io::println("dq2.size()=",dq2.size(),"\t"
+	"dq.size()=",dq.size());
     // Size must match
     if (dq2.size() != dq.size())
     {

Original file line number	Diff line number	Diff line change
`@@ -24,7 +24,8 @@ inline void test_copy_constructor()`
`24`	`24`
`25`	`25`	`// Copy construct`
`26`	`26`	`::fast_io::deque<T> dq2(dq);`
`27`		`-`
	`27`	`+ ::fast_io::io::println("dq2.size()=",dq2.size(),"\t"`
	`28`	`+ "dq.size()=",dq.size());`
`28`	`29`	`// Size must match`
`29`	`30`	`if (dq2.size() != dq.size())`
`30`	`31`	`{`