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Re: [freetds] TDS_INT8_MIN determined by shifting a negative value

From: Frediano Ziglio <freddy77 AT gmail.com>
To: FreeTDS Development Group <freetds AT lists.ibiblio.org>
Subject: Re: [freetds] TDS_INT8_MIN determined by shifting a negative value
Date: Thu, 19 May 2016 11:52:57 +0100

2016-05-18 21:49 GMT+01:00 John Kendall <john AT capps.com>:
> Is there another way to determine TDS_INT8_MIN in convert.c (line 96)?
>
> The new llvm compiler on OS X 10.11 is complaining about bit shifting a
> negative:
>
> warning: shifting a negative signed value is undefined
> [-Wshift-negative-value]
>
> John
>

I would go for something like

#define TDS_INT8_MIN (-((TDS_INT8)1)<<62)-((TDS_INT8)1)<<62))

Frediano

[freetds] TDS_INT8_MIN determined by shifting a negative value, John Kendall, 05/18/2016
- Re: [freetds] TDS_INT8_MIN determined by shifting a negative value, Frediano Ziglio, 05/19/2016