Adapt C?.m to latest spec version

tests/language/language.status

Index: tests/language/language.status
diff --git a/tests/language/language.status b/tests/language/language.status
index 2f58a236831656fa5279b78e907d285dbc742c5d..a65d2c34631731559f42c62ba9d56a0eb4c66618 100644
--- a/tests/language/language.status
+++ b/tests/language/language.status
@@ -43,61 +43,6 @@ type_variable_bounds4_test/01: Fail # Issue 14006
 [ $compiler == none ]
 dynamic_prefix_core_test/01: RuntimeError # Issue 12478
 multiline_strings_test: Fail # Issue 23020
-conditional_method_invocation_test/12: Fail # Issue 23794
-conditional_method_invocation_test/13: Fail # Issue 23794
-conditional_method_invocation_test/14: Fail # Issue 23794
-conditional_method_invocation_test/15: Fail # Issue 23794
-conditional_method_invocation_test/16: Fail # Issue 23794
-conditional_method_invocation_test/17: Fail # Issue 23794
-conditional_method_invocation_test/18: Fail # Issue 23794
-conditional_method_invocation_test/19: Fail # Issue 23794
-conditional_property_access_test/10: Fail # Issue 23794
-conditional_property_access_test/11: Fail # Issue 23794
-conditional_property_access_test/12: Fail # Issue 23794
-conditional_property_access_test/13: Fail # Issue 23794
-conditional_property_access_test/14: Fail # Issue 23794
-conditional_property_access_test/15: Fail # Issue 23794
-conditional_property_access_test/16: Fail # Issue 23794
-conditional_property_access_test/17: Fail # Issue 23794
-conditional_property_assignment_test/23: Fail # Issue 23794
-conditional_property_assignment_test/24: Fail # Issue 23794
-conditional_property_assignment_test/25: Fail # Issue 23794
-conditional_property_assignment_test/26: Fail # Issue 23794
-conditional_property_assignment_test/27: Fail # Issue 23794
-conditional_property_assignment_test/28: Fail # Issue 23794
-conditional_property_assignment_test/29: Fail # Issue 23794
-conditional_property_assignment_test/30: Fail # Issue 23794
-conditional_property_assignment_test/31: Fail # Issue 23794
-conditional_property_assignment_test/32: Fail # Issue 23794
-conditional_property_assignment_test/33: Fail # Issue 23794
-conditional_property_assignment_test/34: Fail # Issue 23794
-conditional_property_assignment_test/35: Fail # Issue 23794
-conditional_property_increment_decrement_test/17: Fail # Issue 23794
-conditional_property_increment_decrement_test/18: Fail # Issue 23794
-conditional_property_increment_decrement_test/19: Fail # Issue 23794
-conditional_property_increment_decrement_test/20: Fail # Issue 23794
-conditional_property_increment_decrement_test/21: Fail # Issue 23794
-conditional_property_increment_decrement_test/22: Fail # Issue 23794
-conditional_property_increment_decrement_test/23: Fail # Issue 23794
-conditional_property_increment_decrement_test/24: Fail # Issue 23794
-conditional_property_increment_decrement_test/25: Fail # Issue 23794
-conditional_property_increment_decrement_test/26: Fail # Issue 23794
-conditional_property_increment_decrement_test/27: Fail # Issue 23794
-conditional_property_increment_decrement_test/28: Fail # Issue 23794
-conditional_property_increment_decrement_test/29: Fail # Issue 23794
-conditional_property_increment_decrement_test/30: Fail # Issue 23794
-conditional_property_increment_decrement_test/31: Fail # Issue 23794
-conditional_property_increment_decrement_test/32: Fail # Issue 23794
-conditional_property_increment_decrement_test/33: Fail # Issue 23794
-conditional_property_increment_decrement_test/34: Fail # Issue 23794
-conditional_property_increment_decrement_test/35: Fail # Issue 23794
-conditional_property_increment_decrement_test/36: Fail # Issue 23794
-conditional_property_increment_decrement_test/37: Fail # Issue 23794
-conditional_property_increment_decrement_test/38: Fail # Issue 23794
-conditional_property_increment_decrement_test/39: Fail # Issue 23794
-conditional_property_increment_decrement_test/40: Fail # Issue 23794
-if_null_assignment_behavior_test/31: Fail # Issue 23794
-if_null_assignment_behavior_test/32: Fail # Issue 23794
 
 [ $compiler == none && ($runtime == vm || $runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
 dynamic_prefix_core_test/none: Fail # Issue 12478