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Unified Diff: src/parser.cc

Issue 1231343003: Scoping error caused crash in CallICNexus::StateFromFeedback (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix webkit tests. Created 5 years, 5 months ago
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Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 1b177080bb3c0f7c50c983bd4a22f441faef33b6..5439a746185e02366709b9e88355771b3e5d482b 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -334,7 +334,8 @@ void Parser::SetCachedData(ParseInfo* info) {
FunctionLiteral* Parser::DefaultConstructor(bool call_super, Scope* scope,
- int pos, int end_pos) {
+ int pos, int end_pos,
+ LanguageMode language_mode) {
int materialized_literal_count = -1;
int expected_property_count = -1;
int parameter_count = 0;
@@ -345,7 +346,7 @@ FunctionLiteral* Parser::DefaultConstructor(bool call_super, Scope* scope,
: FunctionKind::kDefaultBaseConstructor;
Scope* function_scope = NewScope(scope, FUNCTION_SCOPE, kind);
function_scope->SetLanguageMode(
- static_cast<LanguageMode>(scope->language_mode() | STRICT_BIT));
+ static_cast<LanguageMode>(language_mode | STRICT_BIT));
// Set start and end position to the same value
function_scope->set_start_position(pos);
function_scope->set_end_position(pos);
@@ -795,8 +796,9 @@ Expression* ParserTraits::NewTargetExpression(Scope* scope,
Expression* ParserTraits::DefaultConstructor(bool call_super, Scope* scope,
- int pos, int end_pos) {
- return parser_->DefaultConstructor(call_super, scope, pos, end_pos);
+ int pos, int end_pos,
+ LanguageMode mode) {
+ return parser_->DefaultConstructor(call_super, scope, pos, end_pos, mode);
}
@@ -873,10 +875,11 @@ FunctionLiteral* ParserTraits::ParseFunctionLiteral(
const AstRawString* name, Scanner::Location function_name_location,
FunctionNameValidity function_name_validity, FunctionKind kind,
int function_token_position, FunctionLiteral::FunctionType type,
- FunctionLiteral::ArityRestriction arity_restriction, bool* ok) {
+ FunctionLiteral::ArityRestriction arity_restriction,
+ LanguageMode language_mode, bool* ok) {
return parser_->ParseFunctionLiteral(
name, function_name_location, function_name_validity, kind,
- function_token_position, type, arity_restriction, ok);
+ function_token_position, type, arity_restriction, language_mode, ok);
}
@@ -1171,7 +1174,6 @@ FunctionLiteral* Parser::ParseLazy(Isolate* isolate, ParseInfo* info,
DCHECK(is_sloppy(scope->language_mode()) ||
is_strict(info->language_mode()));
DCHECK(info->language_mode() == shared_info->language_mode());
- scope->SetLanguageMode(shared_info->language_mode());
FunctionLiteral::FunctionType function_type = shared_info->is_expression()
? (shared_info->is_anonymous()
? FunctionLiteral::ANONYMOUS_EXPRESSION
@@ -1182,6 +1184,7 @@ FunctionLiteral* Parser::ParseLazy(Isolate* isolate, ParseInfo* info,
if (shared_info->is_arrow()) {
Scope* scope =
NewScope(scope_, ARROW_SCOPE, FunctionKind::kArrowFunction);
+ scope->SetLanguageMode(shared_info->language_mode());
scope->set_start_position(shared_info->start_position());
ExpressionClassifier formals_classifier;
ParserFormalParameterParsingState parsing_state(scope);
@@ -1227,12 +1230,13 @@ FunctionLiteral* Parser::ParseLazy(Isolate* isolate, ParseInfo* info,
} else if (shared_info->is_default_constructor()) {
result = DefaultConstructor(IsSubclassConstructor(shared_info->kind()),
scope, shared_info->start_position(),
- shared_info->end_position());
+ shared_info->end_position(),
+ shared_info->language_mode());
} else {
- result = ParseFunctionLiteral(raw_name, Scanner::Location::invalid(),
- kSkipFunctionNameCheck, shared_info->kind(),
- RelocInfo::kNoPosition, function_type,
- FunctionLiteral::NORMAL_ARITY, &ok);
+ result = ParseFunctionLiteral(
+ raw_name, Scanner::Location::invalid(), kSkipFunctionNameCheck,
+ shared_info->kind(), RelocInfo::kNoPosition, function_type,
+ FunctionLiteral::NORMAL_ARITY, shared_info->language_mode(), &ok);
}
// Make sure the results agree.
DCHECK(ok == (result != NULL));
@@ -2195,14 +2199,14 @@ Statement* Parser::ParseFunctionDeclaration(
bool is_strict_reserved = false;
const AstRawString* name = ParseIdentifierOrStrictReservedWord(
&is_strict_reserved, CHECK_OK);
- FunctionLiteral* fun =
- ParseFunctionLiteral(name, scanner()->location(),
- is_strict_reserved ? kFunctionNameIsStrictReserved
- : kFunctionNameValidityUnknown,
- is_generator ? FunctionKind::kGeneratorFunction
- : FunctionKind::kNormalFunction,
- pos, FunctionLiteral::DECLARATION,
- FunctionLiteral::NORMAL_ARITY, CHECK_OK);
+ FunctionLiteral* fun = ParseFunctionLiteral(
+ name, scanner()->location(),
+ is_strict_reserved ? kFunctionNameIsStrictReserved
+ : kFunctionNameValidityUnknown,
+ is_generator ? FunctionKind::kGeneratorFunction
+ : FunctionKind::kNormalFunction,
+ pos, FunctionLiteral::DECLARATION, FunctionLiteral::NORMAL_ARITY,
+ language_mode(), CHECK_OK);
// Even if we're not at the top-level of the global or a function
// scope, we treat it as such and introduce the function with its
// initial value upon entering the corresponding scope.
@@ -3920,7 +3924,8 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
const AstRawString* function_name, Scanner::Location function_name_location,
FunctionNameValidity function_name_validity, FunctionKind kind,
int function_token_pos, FunctionLiteral::FunctionType function_type,
- FunctionLiteral::ArityRestriction arity_restriction, bool* ok) {
+ FunctionLiteral::ArityRestriction arity_restriction,
+ LanguageMode language_mode, bool* ok) {
// Function ::
// '(' FormalParameterList? ')' '{' FunctionBody '}'
//
@@ -3976,12 +3981,12 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
Scope* declaration_scope = scope_->DeclarationScope();
Scope* original_declaration_scope = original_scope_->DeclarationScope();
Scope* scope = function_type == FunctionLiteral::DECLARATION &&
- is_sloppy(language_mode()) &&
- !allow_harmony_sloppy() &&
+ is_sloppy(language_mode) && !allow_harmony_sloppy() &&
(original_scope_ == original_declaration_scope ||
declaration_scope != original_declaration_scope)
? NewScope(declaration_scope, FUNCTION_SCOPE, kind)
: NewScope(scope_, FUNCTION_SCOPE, kind);
+ scope->SetLanguageMode(language_mode);
ZoneList<Statement*>* body = NULL;
int materialized_literal_count = -1;
int expected_property_count = -1;
@@ -4035,7 +4040,7 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
Variable* fvar = NULL;
Token::Value fvar_init_op = Token::INIT_CONST_LEGACY;
if (function_type == FunctionLiteral::NAMED_EXPRESSION) {
- bool use_strict_const = is_strict(language_mode()) ||
+ bool use_strict_const = is_strict(language_mode) ||
(!allow_legacy_const() && allow_harmony_sloppy());
if (use_strict_const) {
fvar_init_op = Token::INIT_CONST;
@@ -4118,34 +4123,37 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
fvar_init_op, kind, CHECK_OK);
materialized_literal_count = function_state.materialized_literal_count();
expected_property_count = function_state.expected_property_count();
+ }
- if (is_strong(language_mode()) && IsSubclassConstructor(kind)) {
- if (!function_state.super_location().IsValid()) {
- ReportMessageAt(function_name_location,
- MessageTemplate::kStrongSuperCallMissing,
- kReferenceError);
- *ok = false;
- return nullptr;
- }
+ // Parsing the body may change the language mode in our scope.
+ language_mode = scope->language_mode();
+
+ if (is_strong(language_mode) && IsSubclassConstructor(kind)) {
+ if (!function_state.super_location().IsValid()) {
+ ReportMessageAt(function_name_location,
+ MessageTemplate::kStrongSuperCallMissing,
+ kReferenceError);
+ *ok = false;
+ return nullptr;
}
}
// Validate name and parameter names. We can do this only after parsing the
// function, since the function can declare itself strict.
- CheckFunctionName(language_mode(), function_name, function_name_validity,
+ CheckFunctionName(language_mode, function_name, function_name_validity,
function_name_location, CHECK_OK);
const bool use_strict_params =
!parsing_state.is_simple_parameter_list || IsConciseMethod(kind);
const bool allow_duplicate_parameters =
- is_sloppy(language_mode()) && !use_strict_params;
- ValidateFormalParameters(&formals_classifier, language_mode(),
+ is_sloppy(language_mode) && !use_strict_params;
+ ValidateFormalParameters(&formals_classifier, language_mode,
allow_duplicate_parameters, CHECK_OK);
- if (is_strict(language_mode())) {
+ if (is_strict(language_mode)) {
CheckStrictOctalLiteral(scope->start_position(), scope->end_position(),
CHECK_OK);
}
- if (is_strict(language_mode()) || allow_harmony_sloppy()) {
+ if (is_strict(language_mode) || allow_harmony_sloppy()) {
CheckConflictingVarDeclarations(scope, CHECK_OK);
}
}
@@ -4534,8 +4542,8 @@ ClassLiteral* Parser::ParseClassLiteral(const AstRawString* name,
int end_pos = scanner()->location().end_pos;
if (constructor == NULL) {
- constructor =
- DefaultConstructor(extends != NULL, block_scope, pos, end_pos);
+ constructor = DefaultConstructor(extends != NULL, block_scope, pos, end_pos,
+ block_scope->language_mode());
}
block_scope->set_end_position(end_pos);
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