Re: PATCH: prevent SIGFPE on systems where LONG_MIN < -LONG_MAX

[Vincent Lefevre <vincent@xxxxxxxxxx>]

On 2012-09-03 17:08:18 +0200, Jérémie Roquet wrote:
> I think we want a warning, as we have for division by zero.

I don't think so. The division by zero is mathematically undefined,
so that a warning is fine. But a division by -1 could be replaced by
a negate operation; then you have the usual modular arithmetic rules.
They already occur for

$ echo $[ 2**63 ]
-9223372036854775808

anyway.

> The shell should not crash, neither should it return incorrect
> results.

Agreed.

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Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.net/>
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