Fix test and ADL call

Author: winner245

libcxx/include/__algorithm/for_each.h

@@ -27,6 +27,10 @@ _LIBCPP_PUSH_MACROS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
+template <class _InputIterator, class _Function>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Function
+for_each(_InputIterator __first, _InputIterator __last, _Function __f);
+
 template <class, class _InputIterator, class _Function>
 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Function
 __for_each(_InputIterator __first, _InputIterator __last, _Function& __f) {
@@ -53,7 +57,7 @@ for_each(_SegmentedIterator __first, _SegmentedIterator __last, _Function& __fun
 template <class _InputIterator, class _Function>
 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Function
 for_each(_InputIterator __first, _InputIterator __last, _Function __f) {
-  return __for_each<_ClassicAlgPolicy>(__first, __last, __f);
+  return std::__for_each<_ClassicAlgPolicy>(__first, __last, __f);
 }
 
 _LIBCPP_END_NAMESPACE_STD

libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/for_each_n.pass.cpp

@@ -45,8 +45,8 @@ struct deque_test {
   }
 };
 
-/*TEST_CONSTEXPR_CXX23*/
-void test_segmented_deque_iterator() { // TODO: Mark as TEST_CONSTEXPR_CXX23 once std::deque is constexpr
+/*TEST_CONSTEXPR_CXX26*/
+void test_segmented_deque_iterator() { // TODO: Mark as TEST_CONSTEXPR_CXX26 once std::deque is constexpr
   // check that segmented deque iterators work properly
   int sizes[] = {0, 1, 2, 1023, 1024, 1025, 2047, 2048, 2049};
   for (const int size : sizes) {
@@ -102,7 +102,7 @@ TEST_CONSTEXPR_CXX20 bool test() {
   }
 #endif
 
-  if (!TEST_IS_CONSTANT_EVALUATED) // TODO: Use TEST_STD_AT_LEAST_23_OR_RUNTIME_EVALUATED when std::deque is made constexpr
+  if (!TEST_IS_CONSTANT_EVALUATED) // TODO: Use TEST_STD_AT_LEAST_26_OR_RUNTIME_EVALUATED when std::deque is made constexpr
     test_segmented_deque_iterator();
 
 #if TEST_STD_VER >= 20

libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each.pass.cpp

@@ -125,8 +125,8 @@ struct deque_test {
   }
 };
 
-/*TEST_CONSTEXPR_CXX23*/
-void test_segmented_deque_iterator() { // TODO: Mark as TEST_CONSTEXPR_CXX23 once std::deque is constexpr
+/*TEST_CONSTEXPR_CXX26*/
+void test_segmented_deque_iterator() { // TODO: Mark as TEST_CONSTEXPR_CXX26 once std::deque is constexpr
   // check that segmented deque iterators work properly
   int sizes[] = {0, 1, 2, 1023, 1024, 1025, 2047, 2048, 2049};
   for (const int size : sizes) {
@@ -173,7 +173,7 @@ constexpr bool test() {
     }
   }
 
-  if (!TEST_IS_CONSTANT_EVALUATED) // TODO: Use TEST_STD_AT_LEAST_23_OR_RUNTIME_EVALUATED when std::deque is made constexpr
+  if (!TEST_IS_CONSTANT_EVALUATED) // TODO: Use TEST_STD_AT_LEAST_26_OR_RUNTIME_EVALUATED when std::deque is made constexpr
     test_segmented_deque_iterator();
 
   {

libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each_n.pass.cpp

@@ -81,8 +81,8 @@ struct deque_test {
   }
 };
 
-/*TEST_CONSTEXPR_CXX23*/
-void test_segmented_deque_iterator() { // TODO: Mark as TEST_CONSTEXPR_CXX23 once std::deque is constexpr
+/*TEST_CONSTEXPR_CXX26*/
+void test_segmented_deque_iterator() { // TODO: Mark as TEST_CONSTEXPR_CXX26 once std::deque is constexpr
   // check that segmented deque iterators work properly
   int sizes[] = {0, 1, 2, 1023, 1024, 1025, 2047, 2048, 2049};
   for (const int size : sizes) {
@@ -118,7 +118,7 @@ constexpr bool test() {
     assert(a[2].other == 6);
   }
 
-  if (!TEST_IS_CONSTANT_EVALUATED) // TODO: Use TEST_STD_AT_LEAST_23_OR_RUNTIME_EVALUATED when std::deque is made constexpr
+  if (!TEST_IS_CONSTANT_EVALUATED) // TODO: Use TEST_STD_AT_LEAST_26_OR_RUNTIME_EVALUATED when std::deque is made constexpr
     test_segmented_deque_iterator();
 
   {