src/v8/test/mjsunit/regress/regress-124594.js

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// Flags: --allow-natives-syntax --expose-gc

// Test that a GC inside a constructor frame is correctly handled right
// after we deoptimize from an inlined constructor to a constructor stub
// stack frame.

function f(deopt) {
  var x = 1;
  if (deopt) {
    x = x + "foo";
    gc();
  }
  this.x = x;
}

function g(deopt) {
  return new f(deopt);
}

assertEquals({x:1}, g(false));
assertEquals({x:1}, g(false));
%OptimizeFunctionOnNextCall(g);
assertEquals({x:"1foo"}, g(true));