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From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] a bug in awk?
Date: Sat, 10 Jan 2009 14:43:20 -0500	[thread overview]
Message-ID: <e6c76f7db64bfde2c2cf9632bb50c8fd@quanstro.net> (raw)
In-Reply-To: <20090110161922.B3AFF8E35@okapi.maths.tcd.ie>

> For what it's worth, bwk awk does not have this problem, so the error
> must be in code introduced later.
>
>> Note the 5946903e318 which AWK may mistakenly treat as a floating
>> point constant.  Now to figure how to prevent such errors...

not exactly.  i believe this is an ape problem.  i don't think that c89 or
c99 allow a strtod to result in an exception.

[...]
acid: cont()
	11260359 d05544897ff642ca36e58174bc753b0f3382b793   0
3
8192 Jan  9 18:09
4
              11258672 5946903e318d3596c21e35b42a13c1dea5fd32cc   0
7627: math coprocessor error	strtod+0x3b5	FMOVD	rv+0x44(SP),F0
Notes pending:
	sys: fp: numeric overflow fppc=0x16852 status=0xb8a8
acid: stk()
strtod(s00=0x4f0a4,se=0xdfffee24)+0x3b5 /sys/src/ape/lib/ap/stdio/strtod.c:473
is_number(s=0x4f09d)+0x55 /sys/src/cmd/awk/lib.c:703
fldbld()+0x16c /sys/src/cmd/awk/lib.c:333
getnf(a=0x5a90c)+0xe /sys/src/cmd/awk/run.c:439
execute(u=0x5a8fc)+0xbb /sys/src/cmd/awk/run.c:157

- erik




  reply	other threads:[~2009-01-10 19:43 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-10  5:57 Tharaneedharan Vilwanathan
2009-01-10  6:26 ` lucio
2009-01-10  6:39   ` Tharaneedharan Vilwanathan
2009-01-10 16:19   ` John Stalker
2009-01-10 19:43     ` erik quanstrom [this message]
2009-01-10 21:45 erik quanstrom
2009-01-11  7:07 ` Russ Cox
2009-01-11  7:24   ` erik quanstrom
2009-01-11  9:30 ` Tharaneedharan Vilwanathan

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