News for hackers. Stuff that matters.

A comment on Why Const Doesn't Make C Code Faster. Parent comment

Re:Why Const Doesn't Make C Code Faster by einpoklum on Tuesday August 20, 2019 @02:37AM (#20744335)
Isn't that erroneous, in the sense that printf() has side-effects, breaking the "pure" promise?
[ Parent | on HN ]
Re:Why Const Doesn't Make C Code Faster by WalterBright on Tuesday August 20, 2019 @04:42AM (#20744892)
Indeed it does break the pure promise. But it's only for debugging builds.
[ Parent | on HN ]