[fpc-devel] fpdoc (trunk) gives AV's

Thu Feb 23 12:13:44 CET 2012

Hi,

Note:
I can generate the fpGUI documentation without problems using fpdoc
from the v2.6.0 release.

Last night I implemented displaying a class hierarchy in the linear
documentation. Initially for the IPF output writer only. I developed
with FPC 2.6.0 and fpdoc worked perfectly.

Today I got to work, pulled the latest FPC 2.7.1 and merging my
changes into fpdoc. It compiled fine but gave AV's when run. I then
reverted my changes and thought I would first test fpdoc from Trunk
as-is (none of my modifications).

I still got AV's while trying to build the fpGUI documentation.

Then I though, maybe the latest fpdoc in Trunk has broken the IPF
writer. So I switched to the TXT output writer. I still get AV's. I
then reduced the parameters of fpdoc to only processing a single unit
in fpGUI. I still got AV's!   :-(

Here is what I get when I run it via GDB using the TXT output writer.
Using FPC 2.7.1 trunk under 64-bit Linux (Ubuntu 10.04).

---------------------------------------------
[docs (master)]$ gdb /opt/fpc-2.7.1/src/utils/fpdoc/fpdoc
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/git/fpc_argon/utils/fpdoc/fpdoc...done.
(gdb) set args --format=txt --package=fpgui --input='-Fucorelib
/home/graemeg/programming/fpgui/src/corelib/fpg_base.pas'
--descr=xml/corelib/fpg_base.xml --output=test.txt
(gdb) run
Starting program: /opt/git/fpc_argon/utils/fpdoc/fpdoc --format=txt
--package=fpgui --input='-Fucorelib
/home/graemeg/programming/fpgui/src/corelib/fpg_base.pas'
--descr=xml/corelib/fpg_base.xml --output=test.txt
FPDoc - Free Pascal Documentation Tool
Version 2.7.1 [2012/02/23]
(c) 2000 - 2003 Areca Systems GmbH / Sebastian Guenther, sg at freepascal.org

Program received signal SIGSEGV, Segmentation fault.
0x000000000047541a in WRITETYPES (this=0x7ffff7f6e040,
ASECTION=0x7ffff7fc76c0) at dwlinear.pp:896
896	      ConvertNotes(TypeDecl,DocNode.Notes);
(gdb) bt
#0  0x000000000047541a in WRITETYPES (this=0x7ffff7f6e040,
ASECTION=0x7ffff7fc76c0) at dwlinear.pp:896
#1  0x0000000000474317 in WRITEVARSCONSTSTYPES (this=0x7ffff7f6e040,
ASECTION=0x7ffff7fc76c0) at dwlinear.pp:662
#2  0x00000000004741f7 in PROCESSSECTION (this=0x7ffff7f6e040,
ASECTION=0x7ffff7fc76c0) at dwlinear.pp:647
#3  0x0000000000474079 in WRITEDOC (this=0x7ffff7f6e040) at dwlinear.pp:614
#4  0x00000000004a241c in CREATEOUTPUT (this=0x7ffff7fc6040,
APACKAGE=0x7ffff7fe62e0, ENGINE=0x7ffff7fc60e0)
    at mkfpdoc.pp:175
#5  0x00000000004a2ae3 in CREATEDOCUMENTATION (this=0x7ffff7fc6040,
APACKAGE=0x7ffff7fe62e0, PARSEONLY=false)
    at mkfpdoc.pp:228
#6  0x0000000000402396 in DORUN (this=0x7ffff7fce040) at fpdoc.pp:359
#7  0x0000000000465d00 in CUSTAPP$_$TCUSTOMAPPLICATION_$__$$_RUN ()
#8  0x0000000000402618 in main () at fpdoc.pp:375
(gdb)
---------------------------------------------

I get the exact same when I use the IPF writer. I don't use the new
Notes feature at all.

I then decided to use a much simpler unit, the fpGUI constants unit.
Still no luck! I attached both the constants unit and the description
file for that unit. Below is the output GDB have me.

---------------------------------------------
[docs (master)]$ gdb /opt/fpc-2.7.1/src/utils/fpdoc/fpdoc
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/git/fpc_argon/utils/fpdoc/fpdoc...done.
(gdb) break fpc_raiseexception
Breakpoint 1 at 0x412ba0
(gdb) set args --format=ipf --package=fpgui --input='-Fucorelib
/home/graemeg/programming/fpgui/src/corelib/fpg_constants.pas'
--descr=xml/corelib/fpg_constants.xml --output=test.ipf
(gdb) run
Starting program: /opt/git/fpc_argon/utils/fpdoc/fpdoc --format=ipf
--package=fpgui --input='-Fucorelib
/home/graemeg/programming/fpgui/src/corelib/fpg_constants.pas'
--descr=xml/corelib/fpg_constants.xml --output=test.ipf

Breakpoint 1, 0x0000000000412ba0 in fpc_raiseexception ()
(gdb) bt
#0  0x0000000000412ba0 in fpc_raiseexception ()
#1  0x0000000000444378 in
CLASSES$_$TFILESTREAM_$__$$_CREATE$ANSISTRING$WORD$LONGWORD$$TFILESTREAM
()
#2  0x0000000000444129 in
CLASSES$_$TFILESTREAM_$__$$_CREATE$ANSISTRING$WORD$$TFILESTREAM ()
#3  0x00000000004646c7 in GETTEXT$_$TMOFILE_$__$$_CREATE$ANSISTRING$$TMOFILE ()
#4  0x000000000046503e in GETTEXT_$$_TRANSLATERESOURCESTRINGS$ANSISTRING ()
#5  0x0000000000402230 in DORUN (this=0x7ffff7fce040) at fpdoc.pp:347
#6  0x0000000000465d00 in CUSTAPP$_$TCUSTOMAPPLICATION_$__$$_RUN ()
#7  0x0000000000402618 in main () at fpdoc.pp:375
(gdb)
---------------------------------------------

Anybody else have better luck with fpdoc in Trunk?

-- 
Regards,
  - Graeme -

_______________________________________________
fpGUI - a cross-platform Free Pascal GUI toolkit
http://fpgui.sourceforge.net
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