This is tangent to the original question, but this part:
with split-dwarf (which rnglistx and strx
form codes doesn't support yet)
valgrind does support bulk of data generated by --split-dwarf (gcc),
doesn't it?
The above refers to "doesn't support" rnglistx and strx form codes?
I am asking this because I have checked mozilla thunderbird code which
is compiled using
--split-dwarf of GCC and
valgrind reports reasonably sane diagnosis so far.
Well, that is what I thought.
Maybe I was mistaken.
Will you kindly clarify the above?
TIA
Chiaki Ishikawa
On 2022/02/14 17:02, Mark Wielaard wrote:
Hi Thomas,
On Sun, Feb 13, 2022 at 08:18:48PM +0000, Thomas Wollenzin wrote:
This is a just a quick question. As I haven't found a sufficient answer in the
archives.
Does Valgrind-3.19.0.GIT support Clang14's dwarf5 yet?
Compiling my application with '-gfull -gdwarf-4 -gdwarf64' allows valgrind to
function as expected.
When using `-gfull -gdwarf-5 -gdwarf64` I get this failure report.
==139537== Memcheck, a memory error detector
==139537== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==139537== Using Valgrind-3.19.0.GIT and LibVEX; rerun with -h for copyright
info
==139537== Command: ./TheAppName
==139537== Parent PID: 139504
==139537==
### unhandled dwarf2 abbrev form code 0x25
### unhandled dwarf2 abbrev form code 0x25
### unhandled dwarf2 abbrev form code 0x25
### unhandled dwarf2 abbrev form code 0x23
==139537== Valgrind: debuginfo reader: ensure_valid failed:
==139537== Valgrind: during call to ML_(img_get)
==139537== Valgrind: request for range [11350107, +4) exceeds
==139537== Valgrind: valid image size of 1584416 for image:
==139537== Valgrind: "/path/to/TheAppName"
==139537==
==139537== Valgrind: debuginfo reader: Possibly corrupted debuginfo file.
==139537== Valgrind: I can't recover. Giving up. Sorry.
==139537==
As you can see above, valgrind doesn't. clang uses rnglistx and strx
form codes, which are normally (by gcc) only used with split-dwarf
(which valgrind doesn't support yet). Best is to simply use -gdwarf-4
with clang.
Cheers,
Mark
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