Regression range points to 8c87ae9b880f0b6c6824a68b39aec6a204d566c1.

fixed with https://codereview.chromium.org/2362503003/

ClusterFuzz has detected this issue as fixed in range 39608:39609.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5252892724559872

Fuzzer: mbarbella_js_mutation
Job Type: linux_asan_d8
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  args[1]->IsJSFunction() in runtime-internal.cc
  
Regressed: V8: r39570:39571
Fixed: V8: r39608:39609

Minimized Testcase (0.57 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96PIB13iE3tmVBnoZfKYj0lrj3fHpVXL5e6IXgV6cNJ9z1e50C1RynnKcMmXu85MD3Az340BBPrehnCyydVwZ7TX1eOJfylwPWKxgUc2CBV5V9kISlFR8GGR8L9x7rcBkl3sy9s2NaU49y2hJ8ehvqMkQ_BZw?testcase_id=5252892724559872

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

Issue 649447 has been merged into this issue.

 Issue 649634  has been merged into this issue.

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