Re: std::max(unsigned, size_t), amd64 and C++0x

Andrei Alexandrescu <>
Sun, 31 Aug 2008 16:54:44 CST
Alberto Ganesh Barbati wrote:

Andrei Alexandrescu ha scritto:

My point was that even after leaving the typos aside, the simple
implementation is unsatisfactory.

int a = 42, b = 43;
int c = max(a, b); // fine
int d = max(max(a + 1, c), b - 1); // have a nice day

(I don't even have to use auto, which will only exacerbate the problem
because it'll allow people to define variable that are at the same time
of an unexpected type and of an undefined value.)

Sorry for being dumb, but I don't get it... What's wrong with that? I
tried it and I get d == 43 which is the value I would have expected.


I was the dumb one. You are right - I meant to defined d as const int&.

I'd internalized for a long time that max has a dangerous behavior, to
the extent that I neglected to reproduce it properly.


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