The only problem with that interpretation is that it doesn't match the "Moral of the Story" (which is "Be very careful of strings that you get from untrusted sources.") Shooting yourself in the foot that way has nothing to do with strings from untrusted sources. The disconnect is as strong as if it had said:
Look at this troublesome code:
1 while fork();
Moral of the Story: Don't trust external data sources.
Both pieces are true (fork bombs are bad, external data shouldn't be trusted) but the jump from one to the other is unclear and misleading. It implies that external data can cause unexpected fork bombs, but it doesn't actually demonstrating how such a thing might happen.
-Blake
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