Update libcxx/include/__ranges/concat_view.h

changkhothuychung · frederick-vs-ja · web-flow · commit 42d1b584dcbd · 2025-03-08T13:05:16.000-05:00
Co-authored-by: A. Jiang &lt;de34@live.cn&gt;
diff --git a/libcxx/include/__ranges/concat_view.h b/libcxx/include/__ranges/concat_view.h
@@ -561,7 +561,7 @@ class concat_view<_Views...>::__iterator {
     requires __concat_is_random_access<_Const, _Views...>
   {
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
-        !__x.__it_.valueless_by_exception(), "Trying to convert from a valueless iterator of concat_view.");
+        !__x.__it_.valueless_by_exception(), "Trying to subtract two iterators of concat_view where at least one iterator is valueless.");
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         !__y.__it_.valueless_by_exception(), "Trying to convert from a valueless iterator of concat_view.");
     size_t __ix = __x.__it_.index();

Original file line number	Diff line number	Diff line change
`@@ -561,7 +561,7 @@ class concat_view<_Views...>::__iterator {`
`561`	`561`	`requires __concat_is_random_access<_Const, _Views...>`
`562`	`562`	`{`
`563`	`563`	`_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(`
`564`		`- !__x.__it_.valueless_by_exception(), "Trying to convert from a valueless iterator of concat_view.");`
	`564`	`+ !__x.__it_.valueless_by_exception(), "Trying to subtract two iterators of concat_view where at least one iterator is valueless.");`
`565`	`565`	`_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(`
`566`	`566`	`!__y.__it_.valueless_by_exception(), "Trying to convert from a valueless iterator of concat_view.");`
`567`	`567`	`size_t __ix = __x.__it_.index();`