AW: AW: Could turn on -O2 in AIX

From: Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at>
To: "'Tom Lane'" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "'pgsql-hackers(at)postgresql(dot)org'" <pgsql-hackers(at)postgresql(dot)org>
Subject: AW: AW: Could turn on -O2 in AIX
Date: 2000-11-10 18:18:16
Message-ID: 11C1E6749A55D411A9670001FA687963368108@sdexcsrv1.f000.d0188.sd.spardat.at
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> > The macro AbsoluteTimeIsReal does not work somehow.
>
> Hm. That expands to
>
> (((int) time) < ((int) 0x7FFFFFFC) && \
> ((int) time) > ((int) 0x80000001))

There is a special case in nabstime.h for AIX, which imho
got swapped. The normal case for me would be INT_MIN
and not the 0x80000001.
There is a comment that I don't understand at all given the below
source code:

/*
* AIX considers 2147483648 == -2147483648 (since they have the same bit
* representation) but uses a different sign sense in a comparison to
* these integer constants depending on whether the constant is signed
* or not!
*/
#if defined (_AIX)
#define NOSTART_ABSTIME ((AbsoluteTime) INT_MIN)
#else
#define NOSTART_ABSTIME ((AbsoluteTime) 0x80000001) /* -2147483647 (- 2^31) */
#endif

But that is unfortunately not the problem. Looks like yet another broken compiler to me :-(

Andreas

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