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

[Thorsten Glaser]

Paul Eggert dixit:

>  […] gcc -O2 makes no promises without
>  -fwrapv.

gcc -O1 -fwrapv even doesn't work correctly for gcc3,
and gcc2 and gcc <3.3(?) don't even have -fwrapv:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30477

bye,
//mirabile
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