RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-24 01:15:07 +00:00
Code Issues Activity Actions

LibJS/Bytecode: Variable declarators should always prefer lexical env

Browse source 
This fixes an issue where object environments (from `with` statement)
were bypassed by statements like `var x = 1` (for objects with an `x`
property).

Fixes 25 tests in test262. :^)
This commit is contained in:
Andreas Kling 2023-05-13 13:37:12 +02:00
parent 036e1e1bcf
commit 0b49b93e98
1 changed files with 1 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

3
Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
View file

@ -1487,11 +1487,10 @@ static Bytecode::CodeGenerationErrorOr<void> generate_binding_pattern_bytecode(B
static Bytecode::CodeGenerationErrorOr<void> assign_accumulator_to_variable_declarator(Bytecode::Generator& generator, VariableDeclarator const& declarator, VariableDeclaration const& declaration)
{
auto initialization_mode = declaration.is_lexical_declaration() ? Bytecode::Op::SetVariable::InitializationMode::Initialize : Bytecode::Op::SetVariable::InitializationMode::Set;
auto environment_mode = declaration.is_lexical_declaration() ? Bytecode::Op::EnvironmentMode::Lexical : Bytecode::Op::EnvironmentMode::Var;
return declarator.target().visit(
[&](NonnullRefPtr<Identifier const> const& id) -> Bytecode::CodeGenerationErrorOr<void> {
generator.emit<Bytecode::Op::SetVariable>(generator.intern_identifier(id->string()), initialization_mode, environment_mode);
generator.emit<Bytecode::Op::SetVariable>(generator.intern_identifier(id->string()), initialization_mode);
return {};
},
[&](NonnullRefPtr<BindingPattern const> const& pattern) -> Bytecode::CodeGenerationErrorOr<void> {