You wouldn't, but let's say you wrote a function with the signature fast_swap_va... | Hacker News

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scott_s on June 30, 2009 | parent | context | favorite | on: Low Level Bit Hacks You Absolutely Must Know

You wouldn't, but let's say you wrote a function with the signature

  fast_swap_values(unsigned long*, unsigned long*)

Users of the function could accidentally pass in the same addresses.

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