panicked at 'malformed Unicode character escape sequence: Utf8Error { valid_up_to: 3, error_len: None }'

[charlesxsh]

Describe the bug
thread 'main' panicked at 'malformed Unicode character escape sequence: Utf8Error { valid_up_to: 3, error_len: None }'

To Reproduce
Input:
Th"}f\ua/ ڀ

Code:

fn main(){
    // let data = input

    let mut context = Context::new();
    context.eval(data);

}

Output

thread 'main' panicked at 'malformed Unicode character escape sequence: Utf8Error { valid_up_to: 3, error_len: None }', /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/lexer/string.rs:159:38
stack backtrace:
   0: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
   1: core::fmt::write
   2: std::io::Write::write_fmt
   3: std::panicking::default_hook::{{closure}}
   4: std::panicking::default_hook
   5: std::panicking::rust_panic_with_hook
   6: rust_begin_unwind
   7: core::panicking::panic_fmt
   8: core::result::unwrap_failed
   9: core::result::Result<T,E>::expect
             at /home/xsh/code/rust-compiler/src/libcore/result.rs:963
  10: boa::syntax::lexer::string::unescape_string
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/lexer/string.rs:158
  11: <boa::syntax::lexer::string::StringLiteral as boa::syntax::lexer::Tokenizer<R>>::lex
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/lexer/string.rs:61
  12: boa::syntax::lexer::Lexer<R>::next
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/lexer/mod.rs:200
  13: boa::syntax::parser::cursor::buffered_lexer::BufferedLexer<R>::fill
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/cursor/buffered_lexer/mod.rs:131
  14: boa::syntax::parser::cursor::buffered_lexer::BufferedLexer<R>::peek
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/cursor/buffered_lexer/mod.rs:219
  15: boa::syntax::parser::cursor::Cursor<R>::peek
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/cursor/mod.rs:61
  16: <boa::syntax::parser::statement::Statement as boa::syntax::parser::TokenParser<R>>::parse
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/statement/mod.rs:184
  17: <boa::syntax::parser::statement::StatementListItem as boa::syntax::parser::TokenParser<R>>::parse
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/statement/mod.rs:353
  18: <boa::syntax::parser::statement::StatementList as boa::syntax::parser::TokenParser<R>>::parse
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/statement/mod.rs:274
  19: <boa::syntax::parser::ScriptBody as boa::syntax::parser::TokenParser<R>>::parse
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/mod.rs:159
  20: <boa::syntax::parser::Script as boa::syntax::parser::TokenParser<R>>::parse
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/mod.rs:136
  21: boa::syntax::parser::Parser<R>::parse_all
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/syntax/parser/mod.rs:105
  22: boa::context::Context::eval
             at /home/xsh/.cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/Boa-0.11.0/src/context.rs:712

Expected behavior
eval should return error properly instead of panic

Build environment (please complete the following information):

• OS: Ubuntu
• Version: 18.04
• Target triple: x86_64-unknown-linux-gnu
• Rustc version: rustc 1.46.0

Additional context
Add any other context about the problem here.

[Razican]

This was fixed in #1079, and released in the v0.12 version.