[Webkit-unassigned] [Bug 247790] New: Using async function to Symbol.iterator results in infinite loop

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247790

            Bug ID: 247790
           Summary: Using async function to Symbol.iterator results in
                    infinite loop
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: p51lee at kaist.ac.kr

// input.js
var obj = {
  [ Symbol . iterator ]: async ( ) => {
      await 0 ;
      while ( true ) ;
  }
}

for ( { } of obj );
______________________________

Hello,

Executing the input.js using JSC, it throws TypeError but never terminates.

Running the input.js with JSC results in:

---
$ jsc input.js
Exception: TypeError: undefined is not a function (near '...{ } of obj...')
global code at input.js:8:10

// infinite loop

---


WebKit version: 615.1.10

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