[Webkit-unassigned] [Bug 198189] New: DFG::OSREntry should perform arity check

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu May 23 11:27:57 PDT 2019


            Bug ID: 198189
           Summary: DFG::OSREntry should perform arity check
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tzagallo at apple.com

The following code compiles 7 times, but never tiers up to DFG because of the arity check:

function foo(x, y) {
    for (var i = 0; i < 1e8; i++) {
        x[y] += i;

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