From: Linus Torvalds > Sent: 24 January 2020 17:37 ... > (That also means that the compiler can't necessarily even optimize > multiple accesses through a const pointer away, because the object > might be modified through another pointer that aliases the const one - > you'd need to also mark it "restrict" to tell the compiler that no > other pointer will alias). I've seen gcc cache a value read through a 'const' parameter pointer across a function call. Can't remember which version though. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
