nofib’s cacheprof’s allocations nondeterminisitic

This seems to be neither expected nor desired, and hence worth investigating:

./cacheprof +RTS -t 
<<ghc: 127588752 bytes, 243 GCs, 2261288/6551032 avg/max bytes residency (6 samples), 15M in use, 0.00 INIT (0.00 elapsed), 0.12 MUT (0.12 elapsed), 0.05 GC (0.05 elapsed) :ghc>>
./cacheprof +RTS -t 
<<ghc: 127392144 bytes, 242 GCs, 2261304/6551576 avg/max bytes residency (6 samples), 15M in use, 0.00 INIT (0.00 elapsed), 0.11 MUT (0.11 elapsed), 0.04 GC (0.05 elapsed) :ghc>>

The allocations numbers change, when they shoudn’t.

Reproduced with 7.6.3 and current HEAD.

Trac metadata

Trac field	Value
Version	7.6.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	NoFib benchmark suite
Test case
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