* [Bug symtab/29694] [gdb, gdb-index] FAIL: gdb.cp/stub-array-size.exp: print sizeof(a)/sizeof(a[0])
2022-10-16 7:41 [Bug symtab/29694] New: [gdb, gdb-index] FAIL: gdb.cp/stub-array-size.exp: print sizeof(a)/sizeof(a[0]) vries at gcc dot gnu.org
@ 2022-10-16 7:41 ` vries at gcc dot gnu.org
2022-10-16 7:43 ` vries at gcc dot gnu.org
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From: vries at gcc dot gnu.org @ 2022-10-16 7:41 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at sourceware dot org
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2022-10-16 7:41 ` [Bug symtab/29694] " vries at gcc dot gnu.org
@ 2022-10-16 7:43 ` vries at gcc dot gnu.org
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From: vries at gcc dot gnu.org @ 2022-10-16 7:43 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
This is not reproducible sofar on Leap 15.4.
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2022-10-16 7:41 ` [Bug symtab/29694] " vries at gcc dot gnu.org
2022-10-16 7:43 ` vries at gcc dot gnu.org
@ 2022-10-16 15:39 ` vries at gcc dot gnu.org
2022-10-16 16:10 ` tromey at sourceware dot org
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From: vries at gcc dot gnu.org @ 2022-10-16 15:39 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 14400
--> https://sourceware.org/bugzilla/attachment.cgi?id=14400&action=edit
Patch adding hardcoded .s test-case
Using this test-case, I can reproduce the problem on Leap 15.4.
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From: tromey at sourceware dot org @ 2022-10-16 16:10 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |13.1
--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
I was able to reproduce on Fedora 34.
On Monday I'll check if my gdb-index series fixes it.
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From: vries at gcc dot gnu.org @ 2022-10-17 3:59 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom Tromey from comment #3)
> I was able to reproduce on Fedora 34.
> On Monday I'll check if my gdb-index series fixes it.
Unfortunately, for me it doesn't.
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From: tromey at sourceware dot org @ 2022-10-17 15:48 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
The new index says:
[1008] A: 0 [global, type]
whereas the old one says:
[737] A: 1 [global, type]
Here the old one is correct because the A in CU 0 is
just a declaration without a size:
<1><45>: Abbrev Number: 10 (DW_TAG_structure_type)
<46> DW_AT_name : A
<48> DW_AT_declaration : 1
<48> DW_AT_sibling : <0x6d>
So, I think the solution is probably for the scanner to
avoid creating entries for these declaration types.
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From: tromey at sourceware dot org @ 2022-10-17 15:56 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |tromey at sourceware dot org
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From: tromey at sourceware dot org @ 2022-10-17 16:04 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |29366
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=29366
[Bug 29366] [meta] New DWARF indexer meta bug
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2022-10-17 16:04 ` tromey at sourceware dot org
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2022-10-21 16:13 ` cvs-commit at gcc dot gnu.org
2022-10-21 16:14 ` tromey at sourceware dot org
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From: tromey at sourceware dot org @ 2022-10-17 19:41 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
--- Comment #6 from Tom Tromey <tromey at sourceware dot org> ---
https://sourceware.org/pipermail/gdb-patches/2022-October/192767.html
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2022-10-17 19:41 ` tromey at sourceware dot org
@ 2022-10-21 16:13 ` cvs-commit at gcc dot gnu.org
2022-10-21 16:14 ` tromey at sourceware dot org
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From: cvs-commit at gcc dot gnu.org @ 2022-10-21 16:13 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2afd002ac6acb01763d643686345cc0c6ad564bd
commit 2afd002ac6acb01763d643686345cc0c6ad564bd
Author: Tom Tromey <tromey@adacore.com>
Date: Mon Oct 17 12:21:10 2022 -0600
Fix incorrect .gdb_index with new DWARF scanner
PR symtab/29694 points out a regression caused by the new DWARF
scanner when the cc-with-gdb-index target board is used.
What happens here is that an older version of gdb will make an index
describing the "A" type as:
[737] A: 1 [global, type]
whereas the new gdb says:
[1008] A: 0 [global, type]
Here the old one is correct because the A in CU 0 is just a
declaration without a size:
<1><45>: Abbrev Number: 10 (DW_TAG_structure_type)
<46> DW_AT_name : A
<48> DW_AT_declaration : 1
<48> DW_AT_sibling : <0x6d>
This patch fixes the problem by introducing the idea of a "type
declaration". I think gdb still needs to recurse into these types,
searching for methods, but by marking the type itself as a
declaration, gdb can skip this type during lookups and when writing
the index.
Regression tested on x86-64 using the cc-with-gdb-index board.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29694
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From: tromey at sourceware dot org @ 2022-10-21 16:14 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29694
Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Version|HEAD |unknown
--- Comment #8 from Tom Tromey <tromey at sourceware dot org> ---
Fixed.
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