[Webkit-unassigned] [Bug 263647] New: Function.caller returns null when callee is inlined into apply function

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=263647

            Bug ID: 263647
           Summary: Function.caller returns null when callee is inlined
                    into apply function
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: entryhii at gmail.com

==================test.js=====================
function f0(a1, a2) {
  let v5 = f0.caller
  print(v5)
}


function f9(a13) {
  Reflect.apply(f0, undefined, [a13, a13, Reflect]);
}
for (let v17 = 0; v17 < 100; v17++) {
  f9();
}
==============================================

Run args: ./jsc -f test.js --useConcurrentJIT=0  --jitPolicyScale=0.001


f0.caller should be like the following:

`````
function f9(a13) {
  Reflect.apply(f0, undefined, [a13, a13, Reflect]);
}
`````
but JSC returns null in the latest version.

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