From: Joel Brobecker <brobecker@adacore.com>
To: Tom Tromey <tromey@redhat.com>
Cc: Pierre Muller <pierre.muller@ics-cnrs.unistra.fr>,
gdb-patches@sourceware.org
Subject: Re: [RFA] dwarf debug format: Support DW_AT_variable_parameter attribute
Date: Mon, 17 May 2010 17:34:00 -0000 [thread overview]
Message-ID: <20100517172758.GJ2805@adacore.com> (raw)
In-Reply-To: <m34oibvhgh.fsf@fleche.redhat.com>
> Pierre> Should zero be considered as FALSE and
> Pierre> thus the should say that this parameter is NOT a variable parameter,
> Pierre> or does the simple presence of this attribute condfirm
> Pierre> this it is a variable parameter, no matter the value of the flag.
> Pierre> I took the first approach here, but have the impression
> Pierre> that it is not always the case inside dwarf2read.c code.
>
> I think you made the correct choice.
FWIW: I also double-checked the DWARF3 standard, and it says that the
value of this attribute is a flag, and following the hyperlinks in
the PDF, one gets to:
flag
A flag is represented as a single byte of data (DW_FORM_flag).
If the flag has value zero, it indicates the absence of the
attribute. If the flag has a non-zero value, it indicates the
presence of the attribute.
--
Joel
next prev parent reply other threads:[~2010-05-17 17:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <8830.7035308846$1273670829@news.gmane.org>
2010-05-13 17:51 ` Tom Tromey
2010-05-17 17:34 ` Joel Brobecker [this message]
2010-05-17 17:34 ` Pierre Muller
2010-05-17 18:54 ` Joel Brobecker
2010-05-17 21:48 ` Pierre Muller
[not found] ` <44296.7587885962$1274132782@news.gmane.org>
2010-05-19 19:43 ` Tom Tromey
2010-05-19 21:45 ` Pierre Muller
[not found] ` <28559.2589797036$1274302480@news.gmane.org>
2010-05-19 22:34 ` Tom Tromey
2010-05-19 23:34 ` [RFA-v2] " Pierre Muller
[not found] ` <27418.1569614031$1274308493@news.gmane.org>
2010-05-21 17:44 ` Tom Tromey
2010-05-21 20:50 ` Pierre Muller
2010-11-04 5:32 ` [new testcase] Regression 7.1->7.2 for iFort [Re: [RFA-v2] dwarf debug format: Support DW_AT_variable_parameter attribute] Jan Kratochvil
2010-11-04 8:47 ` [Core] " Pierre Free Pascal
2010-11-04 18:01 ` Joel Brobecker
2010-11-05 8:04 ` Pierre Free Pascal
2011-09-01 7:20 ` Jan Kratochvil
2010-05-12 13:27 [RFA] dwarf debug format: Support DW_AT_variable_parameter attribute Pierre Muller
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