[compiler] Repro for false positive ValidateNoFreezingKnownMutableFunctions #33113
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Stack from ghstack (oldest at bottom):
Found when testing the new validation from #33079 internally. I haven't fully debugged, but somehow the combination of the effect function accessing a ref and also calling a second function which has a purely local mutation triggers the validation. Even though the called second function only mutates local variables. If i remove the ref access in the effect function, the error goes away.
Anyway I'll keep debugging, putting up a repro for now.