From: "Frank Ch. Eigler" <fche@elastic.org>
To: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: cgen@sourceware.org, Alan Modra <amodra@gmail.com>,
fche@sourceware.org, Christian Svensson <blue@cmd.nu>,
Pierre Muller <pierre.muller@ics-cnrs.unistra.fr>,
"Maciej W. Rozycki" <macro@codesourcery.com>
Subject: Re: [PATCH] Make large enum constants unsigned
Date: Thu, 22 May 2014 15:11:00 -0000 [thread overview]
Message-ID: <20140522150956.GC4031@elastic.org> (raw)
In-Reply-To: <20140522052921.GA30609@chokladfabriken.org>
Hi -
> this fixes a bug noted in two threads on the binutils mailing list:
> https://sourceware.org/ml/binutils/2014-05/msg00152.html
> https://sourceware.org/ml/binutils/2014-05/msg00195.html
>
> Both threads describe the problem pretty well, but the gist of it
> is that constants are generated that will be interpreted as signed.
>
> 2014-05-22 Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
>
> * enum.scm (gen-enum-decl): Emit 'ULL' after constants larger than
> #x80000000
> [...]
> - (number->string (cadr e))
> + (string-append (number->string (cadr e))
> + (if (> (cadr e)
> + #x80000000)
> + "ULL" ""))
Have you thought of having cgen emit it as
(string-append "(signed int)" (number->string (cadr e)))
... or even find a number->string conversion function that takes into
account the destionation language's encoding constraints.
- FChE
next prev parent reply other threads:[~2014-05-22 15:11 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-22 5:30 Stefan Kristiansson
2014-05-22 6:22 ` Maciej W. Rozycki
2014-05-22 6:52 ` Stefan Kristiansson
2014-05-22 7:10 ` Stefan Kristiansson
2014-05-22 13:33 ` Pierre Muller
[not found] ` <5561926758764771034@unknownmsgid>
2014-05-22 14:10 ` Stefan Kristiansson
2014-05-22 16:14 ` Maciej W. Rozycki
2014-05-22 15:11 ` Frank Ch. Eigler [this message]
2014-05-22 17:34 ` Stefan Kristiansson
2014-05-22 21:06 ` Frank Ch. Eigler
2014-05-22 21:42 ` Maciej W. Rozycki
2014-05-22 22:20 ` Frank Ch. Eigler
2014-05-29 20:09 ` Stefan Kristiansson
2014-05-29 20:32 ` Frank Ch. Eigler
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