Revert "Fix some crashes in dartk."

tests/co19/co19-kernel.status

Index: tests/co19/co19-kernel.status
diff --git a/tests/co19/co19-kernel.status b/tests/co19/co19-kernel.status
index 1b09415228a74417b42b0f003efc386669f49f93..55f7dcc20352aef1ab438f0e1773427e1f00570e 100644
--- a/tests/co19/co19-kernel.status
+++ b/tests/co19/co19-kernel.status
@@ -36,6 +36,12 @@ Language/Functions/Formal_Parameters/Optional_Formals/syntax_t14: Pass
 ###############################################################################
 
 [ $compiler == dartk || $compiler == dartkp ]
+Language/Classes/Constructors/Generative_Constructors/formal_parameter_t01: DartkCrash
+Language/Classes/Constructors/Generative_Constructors/formal_parameter_t03: DartkCrash
+Language/Classes/Constructors/Generative_Constructors/formal_parameter_t04: DartkCrash
+Language/Classes/Constructors/Generative_Constructors/formal_parameter_t05: DartkCrash
+Language/Classes/Constructors/Generative_Constructors/formal_parameter_t06: DartkCrash
+Language/Classes/Constructors/Generative_Constructors/initializing_this_t02: DartkCrash
 Language/Classes/Getters/static_getter_t02: DartkCompileTimeError
 Language/Enums/syntax_t08: MissingCompileTimeError
 Language/Enums/syntax_t09: MissingCompileTimeError
@@ -62,6 +68,8 @@ Language/Libraries_and_Scripts/Exports/syntax_t04: MissingCompileTimeError
 Language/Libraries_and_Scripts/Exports/syntax_t05: MissingCompileTimeError
 Language/Libraries_and_Scripts/Exports/syntax_t06: MissingCompileTimeError
 Language/Libraries_and_Scripts/Imports/invalid_uri_deferred_t02: DartkCompileTimeError
+Language/Libraries_and_Scripts/Scripts/top_level_main_t01: DartkCrash
+Language/Libraries_and_Scripts/Scripts/top_level_main_t02: DartkCrash
 Language/Libraries_and_Scripts/definition_syntax_t01: MissingCompileTimeError
 Language/Libraries_and_Scripts/definition_syntax_t03: MissingCompileTimeError
 Language/Libraries_and_Scripts/definition_syntax_t04: MissingCompileTimeError
@@ -118,7 +126,6 @@ Language/Variables/final_t07: MissingCompileTimeError
 Language/Expressions/Constants/exception_t01: MissingCompileTimeError
 Language/Expressions/Constants/exception_t02: MissingCompileTimeError
 Language/Expressions/Identifier_Reference/evaluation_type_parameter_t02: MissingCompileTimeError
-Language/Libraries_and_Scripts/Scripts/top_level_main_t05: RuntimeError
 Language/Mixins/Mixin_Application/error_t01: MissingCompileTimeError
 Language/Mixins/Mixin_Application/error_t02: MissingCompileTimeError
 Language/Mixins/Mixin_Application/syntax_t16: DartkCrash
@@ -188,7 +195,6 @@ Language/Libraries_and_Scripts/Imports/static_type_t01/04: Pass
 Language/Libraries_and_Scripts/Imports/static_type_t01/05: Pass
 Language/Libraries_and_Scripts/Imports/static_type_t01/06: Pass
 Language/Libraries_and_Scripts/Imports/static_type_t01/07: Pass
-Language/Libraries_and_Scripts/Scripts/top_level_main_t05: RuntimeError
 
 # dartk: JIT failures (debug)
 [ $compiler == dartk && $runtime == vm && $mode == debug ]
@@ -201,4 +207,4 @@ Language/Expressions/Constants/exception_t02: Crash
 
 # dartk: precompilation failures (debug)
 [ $compiler == dartkp && $runtime == dart_precompiled && $mode == debug ]
-Language/Libraries_and_Scripts/Scripts/top_level_main_t05: Crash  # !main_obj.IsNull()
+Language/Libraries_and_Scripts/Scripts/top_level_main_t05: Crash  # !main_obj.IsNull()