From: Jan Kratochvil <jan.kratochvil@redhat.com>
To: Jack Howarth <howarth@bromo.med.uc.edu>
Cc: gdb@sourceware.org
Subject: Re: check for valid location of zero length dwarf block forms?
Date: Sun, 22 Nov 2009 20:22:00 -0000 [thread overview]
Message-ID: <20091122110259.GA9268@host0.dyn.jankratochvil.net> (raw)
In-Reply-To: <20091121034258.GA6166@bromo.med.uc.edu>
On Sat, 21 Nov 2009 04:42:58 +0100, Jack Howarth wrote:
> ...as dwarf debug info containing an AT_location with
> any block form having a zero length.
It is correct and equivalent according to the DWARF spec. and for gcc it seems
to differentiate a case of known optimized-out value (=empty) vs. the case of
gcc failed to describe the variable location (=missing).
dwarflint: DW_AT_location being empty vs. missing check
https://fedorahosted.org/pipermail/elfutils-devel/2009-March/000179.html
https://fedorahosted.org/pipermail/elfutils-devel/2009-March/000180.html
Regards,
Jan
next prev parent reply other threads:[~2009-11-22 11:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-22 17:04 Jack Howarth
2009-11-22 20:22 ` Jan Kratochvil [this message]
2009-11-23 14:17 ` Jack Howarth
2009-11-23 19:57 ` Jan Kratochvil
2009-11-24 8:56 ` Jack Howarth
2009-11-24 19:15 ` Cary Coutant
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