diff --git a/tests/language/wildcard_variables/declarations/local_function_error_test.dart b/tests/language/wildcard_variables/declarations/local_function_error_test.dart
index 9873ae947711..2757ef17cf6f 100644
--- a/tests/language/wildcard_variables/declarations/local_function_error_test.dart
+++ b/tests/language/wildcard_variables/declarations/local_function_error_test.dart
@@ -11,6 +11,6 @@ void main() {
 
   /*indent*/ _();
   //         ^
-  // [analyzer] unspecified
-  // [cfe] unspecified
+  // [analyzer] COMPILE_TIME_ERROR.UNDEFINED_FUNCTION
+  // [cfe] Method not found: '_'.
 }
diff --git a/tests/language/wildcard_variables/import/import_error_test.dart b/tests/language/wildcard_variables/import/import_error_test.dart
index 0d6278548b9c..c210c7f40ac3 100644
--- a/tests/language/wildcard_variables/import/import_error_test.dart
+++ b/tests/language/wildcard_variables/import/import_error_test.dart
@@ -14,12 +14,12 @@ main() {
 
   _.topLevel;
 //^
-// [analyzer] unspecified
+// [analyzer] COMPILE_TIME_ERROR.UNDEFINED_IDENTIFIER
 // [cfe] Undefined name '_'.
 
   _.C(value);
 //^
-// [analyzer] unspecified
+// [analyzer] COMPILE_TIME_ERROR.UNDEFINED_IDENTIFIER
 // [cfe] Undefined name '_'.
 
   // Private extensions can't be used.
diff --git a/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_access_error_test.dart b/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_access_error_test.dart
index 60ec642581d1..4fa3ec98b5ec 100644
--- a/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_access_error_test.dart
+++ b/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_access_error_test.dart
@@ -11,9 +11,9 @@ class C {
   var other;
 
   C(this._) : other = _;
-//^
-// [analyzer] unspecified
-// [cfe] unspecified
+//                    ^
+// [analyzer] COMPILE_TIME_ERROR.IMPLICIT_THIS_REFERENCE_IN_INITIALIZER
+// [cfe] Can't access 'this' in a field initializer to read '_'.
 }
 
 class CWithTypeParameter<_> {
@@ -21,7 +21,7 @@ class CWithTypeParameter<_> {
   var other;
 
   CWithTypeParameter(this._) : other = _;
-//^
-// [analyzer] unspecified
-// [cfe] unspecified
+//                                     ^
+// [analyzer] COMPILE_TIME_ERROR.IMPLICIT_THIS_REFERENCE_IN_INITIALIZER
+// [cfe] Can't access 'this' in a field initializer to read '_'.
 }
diff --git a/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_multiple_error_test.dart b/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_multiple_error_test.dart
index 3c169590a5e4..c8677dbfb2e4 100644
--- a/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_multiple_error_test.dart
+++ b/tests/language/wildcard_variables/initializing_formal_parameters/this_initializer_multiple_error_test.dart
@@ -10,12 +10,12 @@ class C {
   var _;
 
   C(this._, this._);
-//^
-// [analyzer] unspecified
-// [cfe] unspecified
+//               ^
+// [analyzer] COMPILE_TIME_ERROR.DUPLICATE_FIELD_FORMAL_PARAMETER
+// [cfe] '_' was already initialized by this constructor.
 
   C.named(this._, this._);
-//^
-// [analyzer] unspecified
-// [cfe] unspecified
+//                     ^
+// [analyzer] COMPILE_TIME_ERROR.DUPLICATE_FIELD_FORMAL_PARAMETER
+// [cfe] '_' was already initialized by this constructor.
 }
diff --git a/tests/language/wildcard_variables/multiple/local_declaration_type_parameter_error_test.dart b/tests/language/wildcard_variables/multiple/local_declaration_type_parameter_error_test.dart
index 6a34780681bb..9643100440b3 100644
--- a/tests/language/wildcard_variables/multiple/local_declaration_type_parameter_error_test.dart
+++ b/tests/language/wildcard_variables/multiple/local_declaration_type_parameter_error_test.dart
@@ -9,5 +9,8 @@
 
 void genericFunction<_ extends void Function<_>(_, _), _>() {}
 //                                              ^
-// [analyzer] unspecified
-// [cfe] unspecified
+// [analyzer] COMPILE_TIME_ERROR.UNDEFINED_CLASS
+// [cfe] Type '_' not found.
+//                                                 ^
+// [analyzer] COMPILE_TIME_ERROR.UNDEFINED_CLASS
+// [cfe] Type '_' not found.