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(Should throw an exception).
Created an attachment (id=48962) [details]
Patch, missing new results for layout test.
Minor performance regression (necessary bug fix).
(From update of attachment 48962 [details])
r=me, i am somewhat concerned the testcase is going to take too long...
Landed in r54925 without test case; string-concatenate-outofmemory is currently disabled, will work separately at re-enabling this.