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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/28004] DW_AT_ranges with form DW_FORM_sec_offset problem
Date: Fri, 25 Jun 2021 21:40:56 +0000 [thread overview]
Message-ID: <bug-28004-4717-rQ5Cofz9Xi@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-28004-4717@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=28004
--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #4)
> This fixes the warning:
> ...
> diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
> index 07bc08fba14..96bfb1280e1 100644
> --- a/gdb/dwarf2/read.c
> +++ b/gdb/dwarf2/read.c
> @@ -13604,7 +13604,6 @@ dwarf2_rnglists_process (unsigned offset, struct
> dwarf2_cu *cu
> ,
> /* Base address selection entry. */
> gdb::optional<CORE_ADDR> base;
> const gdb_byte *buffer;
> - CORE_ADDR baseaddr;
> bool overflow = false;
> ULONGEST addr_index;
> struct dwarf2_section_info *rnglists_section;
> @@ -13621,8 +13620,6 @@ dwarf2_rnglists_process (unsigned offset, struct
> dwarf2_cu *cu
> ,
> }
> buffer = rnglists_section->buffer + offset;
>
> - baseaddr = objfile->text_section_offset ();
> -
> while (1)
> {--
> /* Initialize it due to a false compiler warning. */
> @@ -13764,7 +13761,7 @@ dwarf2_rnglists_process (unsigned offset, struct
> dwarf2_cu *cu
> ,
>
> /* A not-uncommon case of bad debug info.
> Don't pollute the addrmap with bad data. */
> - if (range_beginning + baseaddr == 0
> + if (range_beginning == 0
> && !per_objfile->per_bfd->has_section_at_zero)
> {
> complaint (_(".debug_rnglists entry has start address of zero"
> ...
> which means we no longer trigger the assert when rerunning. Doesn't fix the
> assert as such though.
There's similar code for .debug_ranges.
I've tested a patch with both fixes on openSUSE Leap 15.2 x86_64 (gcc 7.5.0,
using .debug_ranges), and on openSUSE Tumbleweed x86_64 (gcc 11.1.1, using
.debug_rnglists).
/me -> vacation for 1 week.
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next prev parent reply other threads:[~2021-06-25 21:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 5:26 [Bug gdb/28004] New: " simark at simark dot ca
2021-06-22 5:26 ` [Bug gdb/28004] " simark at simark dot ca
2021-06-22 5:29 ` simark at simark dot ca
2021-06-25 7:03 ` vries at gcc dot gnu.org
2021-06-25 12:47 ` vries at gcc dot gnu.org
2021-06-25 14:23 ` vries at gcc dot gnu.org
2021-06-25 14:30 ` vries at gcc dot gnu.org
2021-06-25 21:40 ` vries at gcc dot gnu.org [this message]
2021-06-27 13:14 ` simark at simark dot ca
2021-07-26 16:17 ` vries at gcc dot gnu.org
2021-07-29 19:19 ` simark at simark dot ca
2021-07-29 21:27 ` vries at gcc dot gnu.org
2021-08-03 20:14 ` vries at gcc dot gnu.org
2021-08-04 14:19 ` vries at gcc dot gnu.org
2021-08-06 14:44 ` cvs-commit at gcc dot gnu.org
2021-08-06 16:02 ` cvs-commit at gcc dot gnu.org
2021-08-06 16:05 ` [Bug symtab/28004] " vries at gcc dot gnu.org
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