digitalmars.D.bugs - [Issue 1079] New: gdb on linux: Dwarf Error: Cannot find DIE at 0xb705 referenced from DIE at 0x250
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http://d.puremagic.com/issues/show_bug.cgi?id=1079
Summary: gdb on linux: Dwarf Error: Cannot find DIE at 0xb705
referenced from DIE at 0x250
Product: D
Version: 1.009
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: bugzilla digitalmars.com
ReportedBy: someanon yahoo.com
previously I can use gdb to debug binary generated by dmd; but now (1.009) it
reports:
Dwarf Error: Cannot find DIE at 0xb705 referenced from DIE at 0x250
when I want to set a bp; or the program seg faults.
GNU gdb 6.4-debian
--
Mar 22 2007
d-bugmail puremagic.com http://d.puremagic.com/issues/show_bug.cgi?id=1079 Can you please provide some sample code where this happens? --
Apr 04 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079 The issue is still present on 1.017 but here only in a very large program. Im working on a minimal example. --
Jun 25 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079Can you please provide some sample code where this happens?Here's a sample (die.d) that used to work some time ago: void main() { Object foo = null; auto b = foo.toUtf8; } You need dmd 1.0xx (1.016 - 1.018 at least cause this) + tango (I'm using the svn version). You also need to use -g switch. $ dmd -g die.d gcc die.o -o die -g -m32 -Xlinker -L/home/jm/d/dsss/lib -lphobos -lpthread -lm $ gdb die GNU gdb 6.6 Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-pc-linux-gnu"... Using host libthread_db library "/lib/libthread_db.so.1". (gdb) run Starting program: /home/jm/tmp/die [Thread debugging using libthread_db enabled] [New Thread -1210349888 (LWP 4919)] Die: DW_TAG_<unknown> (abbrev = 6, offset = 88) has children: FALSE attributes: DW_AT_byte_size (DW_FORM_data1) constant: 8 DW_AT_type (DW_FORM_ref4) constant ref: 80 (adjusted) Dwarf Error: Cannot find type of die [in module /home/jm/tmp/die] (gdb) --
Jul 03 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079 Added to DStress as http://dstress.kuehne.cn/norun/d/debug_info_13_A.d (In this case using -gc instead of -g causes the propper gdb behaviour) --
Jul 23 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079Added to DStress as http://dstress.kuehne.cn/norun/d/debug_info_13_A.d (In this case using -gc instead of -g causes the proper gdb behaviour)This example triggers the bug with dmd 1.011+ - at least dmd 1.010, 1.009, 1.001 seemed to work fine. GDB version, other compiler flags, runtime lib version (I tried libphobos.a 1.011 with dmd 1.010 too) didn't have any effect. --
Aug 07 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079
deewiant gmail.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |regression
--
Aug 07 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079 Created an attachment (id=168) --> (http://d.puremagic.com/issues/attachment.cgi?id=168&action=view) objdump -W binary diff I'm not sure how much this helps, but these are the differences I found in the debugging info between dmd 1.010 and dmd 1.011 generated binaries. The runtime lib is phobos from dmd 1.011 in both binaries and there was no differences in the executable code. Hopefully this gets fixed soon - people need to debug on Linux too. --
Aug 07 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079
braddr puremagic.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |WONTFIX
The change in 1.011 that introduced this was intentional:
Extended Dwarf symbolic debug output with DW_TAG_darray_type,
DW_TAG_aarray_type, and DW_TAG_delegate types.
If you don't use a D aware debugger, then you need to compile with -gc to
restrict the dwarf debug output. The issue is on the gdb side in that it
doesn't support these DWARF extensions and in fact throws its hands up more
spectacularly than it needs to (it could continue past them while still
emitting the 'I dont understand' message.
So, this falls into the 'not a bug' category. The work around is to use '-gc'
rather than just '-g'. The more ideal fix is for someone to get all cozy with
gdb to teach it about the new debug info.
--
Oct 28 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079
stephan kochen.nl changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |stephan kochen.nl
Status|RESOLVED |REOPENED
Resolution|WONTFIX |
I'm reopening this, because these seem to be two separate issues. The original
problem still applies.
I've been working on an updated patch for GDB 6.7, based on the work available
at dsource.org [1]. In addition to the demangler, there's also stubs for the
debugs just fine now.
However, my larger project still fails with a "Cannot find DIE" error. The
original reporter didn't provide a lot of information. But getting a stacktrace
from GDB itself where it reports this error in my project, shows the problem to
be lying in:
DW_TAG_compilation_unit -> DW_TAG_subroutine_type -> DW_TAG_formal_parameter [
DW_AT_type ]
The reference in the type attribute isn't completely wild, it points within the
.debug_info, but it's still invalid. The dwarfdump [2] utility also trips on
this, so I'm again suspecting a problem in DMD.
I'm not sure what kind of construct in D generates this kind of output. The D
module triggering it contains just 3 classes. I was unable to create a small
test case.
[1] gdb-patches project: http://www.dsource.org/projects/gdb-patches
[2] libdwarf and dwarfdump: http://reality.sgiweb.org/davea/dwarf.html
--
Dec 27 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079
I looked at the problem again this morning, and it looks like it's triggered by
delegate parameters. This is the smallest testcase I could come up with:
void problem(void delegate(Object) dg) { dg(null); }
void main() {
problem(delegate void(Object o) {
auto s = o.toString();
});
}
There's an intentional crasher again, so simply compiling and running this in
GDB should trigger the bug immediately. I tested this with DMD 1.024, Tango
0.99.4 and the GDB 6.7.1 that is in Ubuntu Hardy right now.
--
Dec 28 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Also have this problem with v2.011 on Linux.
when setting breakpoint:
without -gc:
Die: DW_TAG_<unknown> (abbrev = 21, offset = 3690)
has children: FALSE
attributes:
DW_AT_byte_size (DW_FORM_data1) constant: 8
DW_AT_containing_type (DW_FORM_ref4) constant ref: 1553
(adjusted)
DW_AT_type (DW_FORM_ref4) constant ref: 3674 (adjusted)
Dwarf Error: Cannot find type of die
with -gc:
Dwarf Error: Cannot find DIE at 0x1369b7 referenced from DIE at 0x19b [in
module
--
Feb 20 2008
http://d.puremagic.com/issues/show_bug.cgi?id=1079 BTW, using http://ftp.gnu.org/gnu/gdb/gdb-6.5.tar.bz2 with http://www.dsource.org/projects/gdb-patches d-gdb6.5.patch --
Feb 20 2008
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Leandro Lucarella <llucax gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
CC| |llucax gmail.com
Resolution| |FIXED
Summary|gdb on linux: Dwarf Error: |gdb: Dwarf Error: Cannot
|Cannot find DIE at 0xb705 |find DIE at 0xb705
|referenced from DIE at |referenced from DIE at
|0x250 |0x250
PDT ---
This seems to be working in DMD 1.049 and 2.034.
I'm trying to organize GDB-related bugs, so I will close this one. Please let
me know if I shouldn't be closing bugs and feel free to reopen it if still
having this problem.
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Oct 12 2009
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Leandro Lucarella <llucax gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Version|1.009 |2.034
Resolution|FIXED |
PDT ---
Seems to be still happening with DMD 2.034 (DMD 1.049 works fine). See bug 3368
for details.
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Oct 12 2009
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Leandro Lucarella <llucax gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |echochamber gmail.com
PDT ---
*** Issue 3368 has been marked as a duplicate of this issue. ***
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Oct 12 2009
http://d.puremagic.com/issues/show_bug.cgi?id=1079
20:53:25 PST ---
This seems to have something to do with arrays (or manifests itself when they
are present):
[test]$ cat nolist.d
void main()
{
int i = 0;
i++;
assert(i == 1);
i++;
assert(i == 2);
i++;
assert(i == 3);
}
That debugs fine, while
[test]$ cat list.d
void main()
{
int[] i = new int[1];
i[0]++;
assert(i[0] == 1);
i[0]++;
assert(i[0] == 2);
i[0]++;
assert(i[0] == 3);
}
debugging these:
[test]$ dgdb -q nolist
(gdb) break _Dmain
Breakpoint 1 at 0x80490aa: file nolist.d, line 1.
(gdb) run
Starting program: /home/bernard/src/dmd2/src/test/nolist
[Thread debugging using libthread_db enabled]
[New Thread 0xb75c46d0 (LWP 27012)]
[Switching to Thread 0xb75c46d0 (LWP 27012)]
Breakpoint 1, D main () at nolist.d:3
3 int i = 0;
Current language: auto; currently d
(gdb) quit
The program is running. Exit anyway? (y or n) y
[test]$ dgdb -q list
(gdb) break _Dmain
Die: DW_TAG_<unknown> (abbrev = 4, offset = 460)
has children: FALSE
attributes:
DW_AT_byte_size (DW_FORM_data1) constant: 8
DW_AT_type (DW_FORM_ref4) constant ref: 453 (adjusted)
Dwarf Error: Cannot find type of die [in module
/home/bernard/src/dmd2/src/test/list]
(gdb) quit
[test]$ gdb -q list
(gdb) break _Dmain
Die: DW_TAG_<unknown> (abbrev = 4, offset = 460)
has children: FALSE
attributes:
DW_AT_byte_size (DW_FORM_data1) constant: 8
DW_AT_type (DW_FORM_ref4) constant ref: 453 (adjusted)
Dwarf Error: Cannot find type of die [in module
/home/bernard/src/dmd2/src/test/list]
Where `dgdb` is a patch GDB 6.8 and `gdb` is the normal GDB that ships with
Jaunty. The `nolist` binary is debuggable with the stock GDB, too.
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Jan 20 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079 20:55:48 PST --- Oh! The above were simply compiled like so: dmd -g list.d dmd -g nolist.d -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Jan 20 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079 21:17:42 PST --- Compiling with `-gc` allows gdb to debug it (but not interact with AA or DAs, of course). This is with a patched gdb, though. Perhaps the bug lies in the patches? I have definitely had failures on larger projects with `-gc`, though, so I suspect dmd still has problems with its DWARF output regardless. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Jan 20 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Robert Clipsham <robert octarineparrot.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |robert octarineparrot.com
16:34:02 PDT ---
http://d.puremagic.com/issues/show_bug.cgi?id=3987 Is related to this bug, if
not a duplicate. I'd also like to note that all the DW_TAG_<unknown> errors
when using -g rather than -gc are non-bugs, as that is expected until gdb
supports D's extensions to DWARF. If you get them when using -gc it is a dmd
issue.
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Mar 19 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079 15:43:36 PDT --- which seems to fix a lot of issues with gdb. If you are only getting the problem with -g, it is not a bug, you should use -gc until gdb supports the D extensions to dwarf. If it doesn't fix it for you and you can provide a test case, I might be able to fix that issue too. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Mar 29 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Ellery Newcomer <ellery-newcomer utulsa.edu> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ellery-newcomer utulsa.edu
16:38:58 PDT ---
which seems to fix a lot of issues with gdb. If you are only getting the
problem with -g, it is not a bug, you should use -gc until gdb supports the D
extensions to dwarf. If it doesn't fix it for you and you can provide a test
case, I might be able to fix that issue too.
I'm getting a
Dwarf Error: Cannot find DIE at 0x0 referenced from DIE at 0x3dbf [in module
/home/ellery/dxl/bin/dxl]
If you feel like wading through my mongo example, here it is:
http://personal.utulsa.edu/~ellery-newcomer/dxl.zip
http://personal.utulsa.edu/~ellery-newcomer/dmdz.d
http://personal.utulsa.edu/~ellery-newcomer/test1.xls
build dmdz, then use it to build dxl.zip, then run
dxl/bin/dxl test1.xls out.xls
Oh, and you need to checkout dmd v1 from repo, as dxl.zip requires changeset
420 to compile. That or fiddle with dxl/read/biff/BOFRecord.d; I think there's
only one line of code that needs to be messed with.
There, I didn't make it too easy for you, did I?
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Mar 29 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079 16:44:08 PDT --- I'm working on another patch now, another project had a similar issue, which is fixed with my new (incomplete) patch. I'll let you know when I've uploaded it. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Mar 29 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Robert Clipsham <robert octarineparrot.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
See Also| |http://d.puremagic.com/issu
| |es/show_bug.cgi?id=3987
13:27:23 BST ---
Bernard Helyer's cases. I don't have a copy of dmd1 set up currently, so if you
could try your test case for me that'd be good :) If there are still issues
when compiling with -gc after applying the above patch let me know.
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Apr 01 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079 06:52:19 PDT ---Bernard Helyer's cases. I don't have a copy of dmd1 set up currently, so if you could try your test case for me that'd be good :) If there are still issues when compiling with -gc after applying the above patch let me know.I'm still getting the error message. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Apr 01 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079 15:39:56 BST --- see if I can create a patch for it later today, it should be far simpler to fix than the last one. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Apr 01 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Robert Clipsham <robert octarineparrot.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |http://d.puremagic.com/issu
| |es/show_bug.cgi?id=4038
20:50:39 BST ---
your errors any more Ellery, could you please confirm these patches fix the
issue for you? If it does I propose we close this issue and report any future
issues as new bugs.
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Apr 01 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079 17:52:43 PDT ---your errors any more Ellery, could you please confirm these patches fix the issue for you? If it does I propose we close this issue and report any future issues as new bugs.erk.. dos2unix dwarf.c.diff but yeah, it looks like it fixes it. Great job! -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Apr 01 2010
http://d.puremagic.com/issues/show_bug.cgi?id=1079
Don <clugdbug yahoo.com.au> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
CC| |clugdbug yahoo.com.au
Resolution| |FIXED
Closing this bug as fixed, on the basis of that last comment. Report any new
issues as new bugs.
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Apr 22 2010