R
Richard Bos
Tor Rustad said:"Testing can show the presence of errors, but not their absence."
-E. W. Dijkstra
"Beware of bugs in the above code; I have only proved it correct, not
tried it." - Donald E. Knuth
Still, there is a non-zero probability, that the same compiler fault can
hit all of them, e.g. via some common mode of failure.
Highly likely, in fact, if they're all working from the same specs.
Richard