v8/test/mjsunit/regress/regress-deopt-gcb.js

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

// This tests that we can correctly handle a GC immediately after a function
// has been deoptimized, even when we have an activation of this function on
// the stack.

// Ensure that there is code objects before the code for the opt_me function.
(function() { var a = 10; a++; })();

function opt_me() {
  deopt();
}

// Make sure we don't inline this function
%NeverOptimizeFunction(deopt);
function deopt() {
  %DeoptimizeFunction(opt_me);
  gc();
}


opt_me();