[Bug gdb/12122] New: 'argc' bad value

[Bug gdb/12122] New: 'argc' bad value

[vladimir.kokovic@a-asoft.com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12122

           Summary: 'argc' bad value
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: critical
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: vladimir.kokovic@a-asoft.com


Hi,

After installing Kubuntu Maverick gdb presents an incorrect value for the
variable 'argc':

LD_LIBRARY_PATH=\
/asoft-src/ispp/libodbc++-0.2.3/libodbc-without-symlinks/dist/Debug/GNU-Linux-x86:\
/asoft-src/ispp/win32/PDCurses-2.6/xcurses-without-symlinks/dist/Debug/GNU-Linux-x86:\
/asoft-src/ispp/win32/vklib-without-symlinks/vklib/dist/Debug/GNU-Linux-x86 \
/opt/gdb-cvs/bin/gdb --args \
/asoft-src/ispp/win32/ispp-without-symlinks/dist/Debug/GNU-Linux-x86/ispp-without-symlinks
"-xDRIVER=PostgreSQL;DATABASE=ispp-pionir-test;SERVER=asoftdev.a-soft.com;PORT=5432;UID=vlada;PWD=vladakk;MaxVarcharSize=65536;MaxLongVarcharSize=65536;ByteaAsLongVarBinary=1"

GNU gdb (GDB) 7.2.50.20101014-cvs
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 "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from
/asoft-src/ispp/win32/ispp-without-symlinks/dist/Debug/GNU-Linux-x86/ispp-without-symlinks...done.
(gdb) br main
Breakpoint 1 at 0x81ffac8: file ../cc/ispp.cpp, line 346.
(gdb) run
Starting program:
/asoft-src/ispp/win32/ispp-without-symlinks/dist/Debug/GNU-Linux-x86/ispp-without-symlinks
-xDRIVER=PostgreSQL\;DATABASE=ispp-pionir-test\;SERVER=asoftdev.a-asoft.com\;PORT=5432\;UID=vlada\;PWD=vladakk\;MaxVarcharSize=65536\;MaxLongVarcharSize=65536\;ByteaAsLongVarBinary=1
[Thread debugging using libthread_db enabled]

Breakpoint 1, main (argc=-1073745448, argv=0xbffff204) at ../cc/ispp.cpp:346
346     FUNKCIJA int main( int argc, char *argv[] ) {
(gdb) quit
A debugging session is active.

        Inferior 1 [process 17851] will be killed.

Quit anyway? (y or n) y


Because of this error we can no longer debug our c++ programs!


Best regards,
Vladimir Koković, Dragan Ćirić
DP  seniors, Belgrade, Serbia

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[Bug gdb/12122] 'argc' bad value

[vladimir.kokovic@a-asoft.com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12122

--- Comment #1 from Vladimir Koković <vladimir.kokovic@a-asoft.com> 2010-10-14 11:27:16 UTC ---
Created attachment 5059
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5059
System informations

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[Bug gdb/12122] 'argc' bad value

[ppluzhnikov at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12122

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING
                 CC|                            |ppluzhnikov at google dot
                   |                            |com

--- Comment #2 from Paul Pluzhnikov <ppluzhnikov at google dot com> 2012-01-22 03:39:06 UTC ---
How was ../cc/ispp.cpp compiled?

Chances are, it was built with -O2 and -g.

When debugging optimized code, you unfortunately must know what you are doing.

In particular, I expect that "argc" will become good after you execute a couple
of "stepi" instructions (or just "next"), and GDB steps past the function
prologue.

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[Bug gdb/12122] 'argc' bad value

[sergiodj at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=12122

Sergio Durigan Junior <sergiodj at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sergiodj at redhat dot com

--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Vladimir, have you had the chance to try what Paul suggested?  Is this a valid
bug?

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[Bug gdb/12122] 'argc' bad value

[sergiodj at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=12122

Sergio Durigan Junior <sergiodj at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Closing as INVALID since there was no input in a long time.  Please reopen if
needed.

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