From: Pedro Alves <palves@redhat.com>
To: Pierre Muller <pierre.muller@ics-cnrs.unistra.fr>,
"'gdb-patches'" <gdb-patches@sourceware.org>
Subject: Re: [RFA] Fix pascal behavior for class fields
Date: Thu, 08 Jan 2015 10:48:00 -0000 [thread overview]
Message-ID: <54AE605A.8050308@redhat.com> (raw)
In-Reply-To: <54ae4586.01e3440a.7b06.fffff844SMTPIN_ADDED_BROKEN@mx.google.com>
On 01/08/2015 08:53 AM, Pierre Muller wrote:
> This is the problem that triggered my previous RFA,
> as I discovered it while debugging this problem.
>
> In the pascal parser, there is special code
> that will try to emulate case-insensivity despite the
> fact that pascal is not registered as a 'case-insensitive' language.
>
> This code does not work as expected for fields of a class,
> for which exact casing is currently required.
>
> See:
> https://sourceware.org/bugzilla/show_bug.cgi?id=17815
> for source code:
>
> # Compile attached source code, using Free Pascal compiler
>
> fpc -gs -Mobjfpc test-class-pascal.pas
>
> # Debug it
> gdb ./test-class-pascal
> .......
> (gdb) b TA__CHECK
> Breakpoint 1 at 0x40154c: file test-class-pascal.pas, line 23.
> (gdb) r
> Starting program: E:\pas\test\test-class-pascal.exe
> [New Thread 6700.0x1ae0]
>
> Breakpoint 1, TA__CHECK (B=0x1572ee0, this=<error reading variable>)
> at test-class-pascal.pas:23
> 23 check:=(x < b.x);
> (gdb) p this
> $1 = (TA) 0x1572ed0
> (gdb) p this^
> warning: can't find linker symbol for virtual table for `TA' value
> $2 = {<TOBJECT> = {_vptr$ = {0x408014, 0x43}}, X = 67, Y = 33}
> (gdb) p X
> warning: can't find linker symbol for virtual table for `TA' value
> $3 = 67
> (gdb) p B.X
> warning: can't find linker symbol for virtual table for `TA' value
> $4 = -1
> (gdb) p b.x
> warning: can't find linker symbol for virtual table for `TA' value
> $5 = -1
> (gdb) p x
> Type TA has no component named x.
> (gdb)
How about adding this to the test suite?
Thanks,
Pedro Alves
next parent reply other threads:[~2015-01-08 10:48 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <54ae4586.01e3440a.7b06.fffff844SMTPIN_ADDED_BROKEN@mx.google.com>
2015-01-08 10:48 ` Pedro Alves [this message]
2015-01-08 13:01 ` Pierre Muller
[not found] ` <54ae7f9f.c323460a.36ed.ffffff30SMTPIN_ADDED_BROKEN@mx.google.com>
2015-01-08 13:41 ` Pedro Alves
2015-01-08 14:15 ` gdb-patches RFA: " Pierre Muller
[not found] ` <54ae911b.85e3440a.1d96.5ffdSMTPIN_ADDED_BROKEN@mx.google.com>
2015-01-09 10:52 ` Pedro Alves
2015-01-09 10:55 ` Pedro Alves
2015-01-09 16:16 ` [RFA 0/3] Fix pascal behavior for class fields with testcase Pierre Muller
2015-01-09 16:18 ` [RFA PATCH 2/3] Add debug-stabs debug-dwarf and class option for pascal compiler Pierre Muller
2015-02-04 23:37 ` [RFA 0/3 V4] Fix pascal behavior for class fields with testcase Pierre Muller
2015-02-15 6:59 ` PING " Pierre Muller
2015-04-07 20:06 ` PING^2 " Pierre Muller
[not found] ` <54e043b2.626ec20a.0c59.ffffaeacSMTPIN_ADDED_BROKEN@mx.google.com>
2015-04-20 6:00 ` PING " Doug Evans
2015-04-21 20:33 ` Pierre Muller
2015-01-09 16:16 ` [RFA PATCH 1/3] Remember the case pattern that allowed finding a field of this Pierre Muller
2015-01-23 7:30 ` [RFA PATCH 1/3 V3] " Pierre Muller
2015-02-04 23:37 ` [RFA PATCH 1/3 V4] " Pierre Muller
2015-01-09 16:18 ` [RFA PATCH 3/3] Testcase for pascal/17815 Pierre Muller
[not found] ` <54afff61.6790420a.0fa7.4f63SMTPIN_ADDED_BROKEN@mx.google.com>
2015-01-10 0:45 ` [RFA PATCH 2/3] Add debug-stabs debug-dwarf and class option for pascal compiler Doug Evans
2015-01-10 0:55 ` Pierre Muller
[not found] ` <54b07891.01b3c20a.2a7b.ffff9f96SMTPIN_ADDED_BROKEN@mx.google.com>
2015-01-10 21:23 ` Doug Evans
2015-01-14 15:04 ` [RFA PATCH 2/3 V2] Add "class" " Pierre Muller
[not found] ` <54b6858f.a287440a.5b61.ffff9ef0SMTPIN_ADDED_BROKEN@mx.google.com>
2015-01-22 12:49 ` Pedro Alves
2015-01-23 5:21 ` [RFA PATCH 2/3 V3] " Pierre Muller
2015-01-23 11:55 ` Pedro Alves
2015-02-04 23:37 ` [RFA PATCH 2/3 V4] " Pierre Muller
[not found] ` <54afff6b.ee8d440a.16ee.ffffb424SMTPIN_ADDED_BROKEN@mx.google.com>
2015-01-22 12:46 ` [RFA PATCH 3/3] Testcase for pascal/17815 Pedro Alves
2015-01-23 7:16 ` [RFA PATCH 3/3 V3] " Pierre Muller
2015-01-23 12:29 ` Pedro Alves
2015-02-04 23:37 ` [RFA PATCH 3/3 V4] " Pierre Muller
2015-01-08 8:53 [RFA] Fix pascal behavior for class fields Pierre Muller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=54AE605A.8050308@redhat.com \
--to=palves@redhat.com \
--cc=gdb-patches@sourceware.org \
--cc=pierre.muller@ics-cnrs.unistra.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).