For some reason, it throws a warning while printing the sorted log. According to the output of warn, its always on the last line of the unsorted log.

It's generally a good idea to include a cut&paste of the warning message!

I don't see any potential for using vec to save memory here.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^5: Sort big text file - byte offset - 50% there (Added code) by BrowserUk
in thread Sort big text file - byte offset - 50% there by msalerno

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