Bug 247434

Summary: Invalid call chained with optional access
Product: WebKit Reporter: Kanguk Lee <p51lee>
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: mark.lam, ross.kirsling, webkit-bug-importer, ysuzuki
Priority: P2 Keywords: InRadar
Version: WebKit Local Build   
Hardware: Unspecified   
OS: Unspecified   

Description Kanguk Lee 2022-11-03 09:15:34 PDT
// input.js
( { } . x ( ) ?. x ) ;
__________________

Hello,

Executing the input.js using JSC, it is terminated normally.
However, it is expected to throw TypeError since `{ } . x` is not a function.

Running the input.js with JSC gives

---
$ jsc input.js
// no error
---

while other engines behave like

---
# V8
$ node input.js
input.js:1: TypeError: {}.x is not a function
( { } . x ( ) ?. x ) ;
        ^
TypeError: {}.x is not a function
    at input.js:1:9

# GraalJS
$ js input.js
TypeError: (intermediate value).x is not a function
	at <js> :program(input.js:1:2-12)
---


WebKit version: 615.1.10
Comment 1 Radar WebKit Bug Importer 2022-11-07 16:46:34 PST
<rdar://problem/102065911>
Comment 2 Ross Kirsling 2022-11-24 17:26:24 PST
Marking as duplicate as both cases will be addressed with one patch.

*** This bug has been marked as a duplicate of bug 247431 ***