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gczeal(0);
var g1 = newGlobal({ sameZoneAs: this });
// Turn on the object metadata builder because it will create internal weakmap
// entries for all objects created from here on.
enableShellAllocationMetadataBuilder();
// Construct a pair of error objects. Perhaps this fills out the metadata table?
new Error();
new Error();
// Construct a CCW for g1.Object, which will internally create the object
// metadata table and add an entry to it.
try { g1.Object } catch(e) { }
// Begin an incremental GC
startgc(1);
// Call a scary function that does weird stuff.
recomputeWrappers();