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From: Tom Tromey <tromey@redhat.com>
To: Sanimir Agovic <sanimir.agovic@intel.com>
Cc: palves@redhat.com, xdje42@gmail.com, gdb-patches@sourceware.org,
	       keven.boell@intel.com
Subject: Re: [PATCH v4 02/13] type: add c99 variable length array support
Date: Wed, 15 Jan 2014 21:07:00 -0000	[thread overview]
Message-ID: <87eh49osy8.fsf@fleche.redhat.com> (raw)
In-Reply-To: <1387282678-3847-3-git-send-email-sanimir.agovic@intel.com>	(Sanimir Agovic's message of "Tue, 17 Dec 2013 13:17:47 +0100")

>>>>> "Sanimir" == Sanimir Agovic <sanimir.agovic@intel.com> writes:

Sanimir> +int
Sanimir> +dwarf2_evaluate_property (const struct dynamic_prop *prop, CORE_ADDR address,
Sanimir> +			  CORE_ADDR *value)
Sanimir> +{
[...]
Sanimir> +	    if (!value_optimized_out (val))
Sanimir> +	      *value = value_as_long (value_ind (val));
Sanimir> +	  }
Sanimir> +	return 1;

This particular branch can return 1 but not set *value.
That seems wrong.

Sanimir> +      else if (attr_form_is_block (target_attr))
Sanimir> +	{
Sanimir> +	  const gdb_byte ops[] = {DW_OP_deref};
Sanimir> +
Sanimir> +	  baton = obstack_alloc (obstack, sizeof (*baton));
Sanimir> +	  baton->locexpr = block_to_locexpr_baton (DW_BLOCK (target_attr),
Sanimir> +						   cu, ops, sizeof (ops));

I noted in an earlier review that I think this approach will not work.
Not sure if I'm misunderstanding something; but I dug up the old thread
and you didn't respond to this bit:

    https://sourceware.org/ml/gdb-patches/2013-11/msg00785.html

The rest of this seemed fine to me.

Tom

  reply	other threads:[~2014-01-15 21:07 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-17 12:18 [PATCH v4 00/13] C99 " Sanimir Agovic
2013-12-17 12:18 ` [PATCH v4 01/13] vla: introduce new bound type abstraction adapt uses Sanimir Agovic
2013-12-18  3:24   ` Joel Brobecker
2013-12-18 15:59     ` Agovic, Sanimir
2014-01-15 21:39       ` Tom Tromey
2014-01-16  2:45         ` Joel Brobecker
2014-01-16 17:03         ` Agovic, Sanimir
2014-01-16 17:39           ` Tom Tromey
2013-12-17 12:18 ` [PATCH v4 06/13] vla: print "variable length" for unresolved dynamic bounds Sanimir Agovic
2013-12-17 12:18 ` [PATCH v4 04/13] vla: enable sizeof operator for indirection Sanimir Agovic
2014-01-15 21:28   ` Tom Tromey
2014-01-16 17:02     ` Agovic, Sanimir
2013-12-17 12:18 ` [PATCH v4 02/13] type: add c99 variable length array support Sanimir Agovic
2014-01-15 21:07   ` Tom Tromey [this message]
2014-01-16 17:01     ` Agovic, Sanimir
2013-12-17 12:18 ` [PATCH v4 07/13] vla: support for DW_AT_count Sanimir Agovic
2013-12-17 12:18 ` [PATCH v4 05/13] vla: update type from newly created value Sanimir Agovic
2013-12-18  3:44   ` Joel Brobecker
2013-12-17 12:19 ` [PATCH v4 03/13] vla: enable sizeof operator to work with variable length arrays Sanimir Agovic
2014-01-15 21:24   ` Tom Tromey
2013-12-17 12:19 ` [PATCH v4 10/13] test: multi-dimensional c99 vla Sanimir Agovic
2013-12-17 12:19 ` [PATCH v4 11/13] test: evaluate pointers to C99 vla correctly Sanimir Agovic
2013-12-17 12:19 ` [PATCH v4 12/13] test: basic c99 vla tests for C primitives Sanimir Agovic
2014-01-15 21:39   ` Tom Tromey
2014-01-16 17:02     ` Agovic, Sanimir
2014-01-16 17:33       ` Tom Tromey
2014-01-17 13:36         ` Agovic, Sanimir
2014-01-20  5:47           ` Tom Tromey
2014-01-20  9:32             ` Agovic, Sanimir
2013-12-17 12:19 ` [PATCH v4 08/13] vla: resolve dynamic bounds if value contents is a constant byte-sequence Sanimir Agovic
2013-12-17 12:19 ` [PATCH v4 13/13] test: add mi vla test Sanimir Agovic
2013-12-17 12:19 ` [PATCH v4 09/13] test: cover subranges with present DW_AT_count attribute Sanimir Agovic
2013-12-18  3:01 ` [PATCH v4 00/13] C99 variable length array support Joel Brobecker
2014-01-15 21:41 ` Tom Tromey
2014-01-16 17:05   ` Agovic, Sanimir
2014-01-16 22:11     ` Tom Tromey

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