Program: 19180
Project: 19180
Buggy source:
private static final String propToString(byte propType){
switch (propType) {
case VAR_ARGS_NAME:
    return "String_Node_Str";
case JSDOC_INFO_PROP:
  return "String_Node_Str";
case INCRDECR_PROP:
return "String_Node_Str";
case QUOTED_PROP:
return "String_Node_Str";
case OPT_ARG_NAME:
return "String_Node_Str";
case SYNTHETIC_BLOCK_PROP:
return "String_Node_Str";
case ADDED_BLOCK:
return "String_Node_Str";
case ORIGINALNAME_PROP:
return "String_Node_Str";
case SIDE_EFFECT_FLAGS:
return "String_Node_Str";
case IS_CONSTANT_NAME:
return "String_Node_Str";
case IS_NAMESPACE:
return "String_Node_Str";
case DIRECTIVES:
return "String_Node_Str";
case DIRECT_EVAL:
return "String_Node_Str";
case FREE_CALL:
return "String_Node_Str";
case STATIC_SOURCE_FILE:
return "String_Node_Str";
case INPUT_ID:
return "String_Node_Str";
case SLASH_V:
return "String_Node_Str";
case INFERRED_FUNCTION:
return "String_Node_Str";
case CHANGE_TIME:
return "String_Node_Str";
case REFLECTED_OBJECT:
return "String_Node_Str";
case STATIC_MEMBER:
return "String_Node_Str";
case GENERATOR_FN:
return "String_Node_Str";
case ARROW_FN:
return "String_Node_Str";
case ASYNC_FN:
return "String_Node_Str";
case YIELD_ALL:
return "String_Node_Str";
case EXPORT_DEFAULT:
return "String_Node_Str";
case EXPORT_ALL_FROM:
return "String_Node_Str";
case IS_CONSTANT_VAR:
return "String_Node_Str";
case GENERATOR_MARKER:
return "String_Node_Str";
case GENERATOR_SAFE:
return "String_Node_Str";
case RAW_STRING_VALUE:
return "String_Node_Str";
case COMPUTED_PROP_METHOD:
return "String_Node_Str";
case COMPUTED_PROP_GETTER:
return "String_Node_Str";
case COMPUTED_PROP_SETTER:
return "String_Node_Str";
case COMPUTED_PROP_VARIABLE:
return "String_Node_Str";
case ANALYZED_DURING_GTI:
return "String_Node_Str";
case CONSTANT_PROPERTY_DEF:
return "String_Node_Str";
case DECLARED_TYPE_EXPR:
return "String_Node_Str";
case TYPE_BEFORE_CAST:
return "String_Node_Str";
case OPT_ES6_TYPED:
return "String_Node_Str";
case GENERIC_TYPE_LIST:
return "String_Node_Str";
case IMPLEMENTS:
return "String_Node_Str";
case CONSTRUCT_SIGNATURE:
return "String_Node_Str";
case ACCESS_MODIFIER:
return "String_Node_Str";
case NON_INDEXABLE:
return "String_Node_Str";
case PARSE_RESULTS:
return "String_Node_Str";
case GOOG_MODULE:
return "String_Node_Str";
case GOOG_MODULE_REQUIRE:
return "String_Node_Str";
case FEATURE_SET:
return "String_Node_Str";
case IS_MODULE_NAME:
return "String_Node_Str";
case WAS_PREVIOUSLY_PROVIDED:
return "String_Node_Str";
case IS_ES6_CLASS:
return "String_Node_Str";
case TRANSPILED:
return "String_Node_Str";
case DELETED:
return "String_Node_Str";
case MODULE_ALIAS:
return "String_Node_Str";
case IS_UNUSED_PARAMETER:
return "String_Node_Str";
case MODULE_EXPORT:
return "String_Node_Str";
case IS_SHORTHAND_PROPERTY:
return "String_Node_Str";
default :
throw new IllegalStateException("String_Node_Str" + propType);
}
}

Fixed version (ground truth):
private static final String propToString(byte propType){
switch (propType) {
case VAR_ARGS_NAME:
    return "String_Node_Str";
case JSDOC_INFO_PROP:
  return "String_Node_Str";
case INCRDECR_PROP:
return "String_Node_Str";
case QUOTED_PROP:
return "String_Node_Str";
case OPT_ARG_NAME:
return "String_Node_Str";
case SYNTHETIC_BLOCK_PROP:
return "String_Node_Str";
case ADDED_BLOCK:
return "String_Node_Str";
case ORIGINALNAME_PROP:
return "String_Node_Str";
case SIDE_EFFECT_FLAGS:
return "String_Node_Str";
case IS_CONSTANT_NAME:
return "String_Node_Str";
case IS_NAMESPACE:
return "String_Node_Str";
case DIRECTIVES:
return "String_Node_Str";
case DIRECT_EVAL:
return "String_Node_Str";
case FREE_CALL:
return "String_Node_Str";
case STATIC_SOURCE_FILE:
return "String_Node_Str";
case INPUT_ID:
return "String_Node_Str";
case SLASH_V:
return "String_Node_Str";
case INFERRED_FUNCTION:
return "String_Node_Str";
case CHANGE_TIME:
return "String_Node_Str";
case REFLECTED_OBJECT:
return "String_Node_Str";
case STATIC_MEMBER:
return "String_Node_Str";
case GENERATOR_FN:
return "String_Node_Str";
case ARROW_FN:
return "String_Node_Str";
case ASYNC_FN:
return "String_Node_Str";
case YIELD_ALL:
return "String_Node_Str";
case EXPORT_DEFAULT:
return "String_Node_Str";
case EXPORT_ALL_FROM:
return "String_Node_Str";
case IS_CONSTANT_VAR:
return "String_Node_Str";
case GENERATOR_MARKER:
return "String_Node_Str";
case GENERATOR_SAFE:
return "String_Node_Str";
case RAW_STRING_VALUE:
return "String_Node_Str";
case COMPUTED_PROP_METHOD:
return "String_Node_Str";
case COMPUTED_PROP_GETTER:
return "String_Node_Str";
case COMPUTED_PROP_SETTER:
return "String_Node_Str";
case COMPUTED_PROP_VARIABLE:
return "String_Node_Str";
case ANALYZED_DURING_GTI:
return "String_Node_Str";
case CONSTANT_PROPERTY_DEF:
return "String_Node_Str";
case DECLARED_TYPE_EXPR:
return "String_Node_Str";
case TYPE_BEFORE_CAST:
return "String_Node_Str";
case OPT_ES6_TYPED:
return "String_Node_Str";
case GENERIC_TYPE_LIST:
return "String_Node_Str";
case IMPLEMENTS:
return "String_Node_Str";
case CONSTRUCT_SIGNATURE:
return "String_Node_Str";
case ACCESS_MODIFIER:
return "String_Node_Str";
case NON_INDEXABLE:
return "String_Node_Str";
case PARSE_RESULTS:
return "String_Node_Str";
case GOOG_MODULE:
return "String_Node_Str";
case GOOG_MODULE_REQUIRE:
return "String_Node_Str";
case FEATURE_SET:
return "String_Node_Str";
case IS_MODULE_NAME:
return "String_Node_Str";
case WAS_PREVIOUSLY_PROVIDED:
return "String_Node_Str";
case IS_ES6_CLASS:
return "String_Node_Str";
case TRANSPILED:
return "String_Node_Str";
case DELETED:
return "String_Node_Str";
case MODULE_ALIAS:
return "String_Node_Str";
case IS_UNUSED_PARAMETER:
return "String_Node_Str";
case MODULE_EXPORT:
return "String_Node_Str";
case IS_SHORTHAND_PROPERTY:
return "String_Node_Str";
case ES6_MODULE:
return "String_Node_Str";
default :
throw new IllegalStateException("String_Node_Str" + propType);
}
}