[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."

From: Robert Dewar
Subject: Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."
Date: Sat, 30 Dec 2006 20:19:59 -0500
User-agent: Thunderbird (Windows/20061207)

(again I apologize for breaking the thread),
Here is the reply I sent properly threaded

Gaby said

> K&R C leaves arithmetic overflow undefined (except for unsigned
> types), in the sense that you get whatever the underlying hardware
> gives you. If it traps, you get trapped. If it wraps, you get > wrapped.

Is that really what the K&R book says, or just what compilers typically
did? My memory is that the K&R book leaves it undefined period, but it's
a long time since I read it!

reply via email to

[Prev in Thread] Current Thread [Next in Thread]