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

From: Richard Guenther
Subject: Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."
Date: Sat, 30 Dec 2006 13:22:43 +0100

On 12/30/06, Paul Eggert <address@hidden> wrote:

For example, GCC itself assumes wrapv semantics internally,
but according to the -fwrapv opponents GCC is obviously "at
fault" here and should be fixed, so that shouldn't count,
right?  (If that's the way the data will be collected, I
think I know how things will turn out.  :-)

Where does GCC assume wrapv semantics?
GCC assumes two's complement arithmetic in the backend - but
that's different as it's not ISO C it is generating but target machine
assembly code.


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