// input.js
`${ + 0 }` [ 0 ] = 0 ;
// Note: this is fine
// `${ 0 }` [ 0 ] = 0 ;
_____________________

Hello,

Executing the input.js using JSC throws SyntaxError, but it is expected to be terminated normally.

This bug looks similar to the bugs I found: https://bugs.webkit.org/show_bug.cgi?id=247435 and https://bugs.webkit.org/show_bug.cgi?id=247497.

However, I personally think this may not be a duplicate of Bug 247435 and Bug 247497, so please let me know if this bug is duplicated or not.

Running the input.js with JSC results in:

---
$ jsc input.js
Exception: SyntaxError: Left hand side of operator '=' must be a reference.
at input.js:1
---

while other engines behave like:

---
# V8
$ node input.js
// no error

# GraalJS
$ js input.js
// no error
---


WebKit version: 615.1.10