#4 segfault

[Ákos Maróy]

Hi,

I get a segfault from the report executable, when I try
to run it:

$ bin/report
Segmentation fault

the stack trace from gdb is:

(gdb) bt
#0 0x42080c53 in strlen () from /lib/i686/libc.so.6
#1 0x42080a21 in strdup () from /lib/i686/libc.so.6
#2 0x080488b0 in main (argc=1, argv=0xbffff874) at
report.c:58
#3 0x42017589 in __libc_start_main () from
/lib/i686/libc.so.6

I'm using RedHat Linux 7.3

[Joel Crisp]

Logged In: YES
user_id=95506

Hi

Can you let me know the JVM version, the compiler version
you used, and the version of the DB library which you are
connecting to?
I assume that you are on an X86 machine

[Ákos Maróy]

Logged In: YES
user_id=96773

sure:

$ java -version
java version "1.4.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build
1.4.0_01-b03)
Java HotSpot(TM) Client VM (build 1.4.0_01-b03, mixed mode)

$ gcc --version
2.96

$ rpm -q db
db-4.0.14-0.1

and yes, this is an x86 machine

[Joel Crisp]

Logged In: YES
user_id=95506

I'll look into it.
Does this happen all the time or just occasionally?

[Ákos Maróy]

Logged In: YES
user_id=96773

For the test included in the downloadable archive, it
doesn't happen.

For a java project of mine, it happens always.

[Joel Crisp]

Logged In: YES
user_id=95506

Hmm. Looks like a db problem. Can you try with db3 instead?
Also, check that you don't have a db file existing before
you do the run
The DB test program should dump the DB keys in raw format
My version of DB is 3.2.9-4
I would also suggest trying the latest version from CVS just
in case...

[Ákos Maróy]

Logged In: YES
user_id=96773

I have all versions of db (e.g. 1, 2, 3 & 4) installed:

# ls /usr/lib/libdb*
/usr/lib/libdb1.a
/usr/lib/libdb1.so
/usr/lib/libdb1.so.2
/usr/lib/libdb2.a
/usr/lib/libdb2.so
/usr/lib/libdb2.so.3
/usr/lib/libdb-4.0.a
/usr/lib/libdb-4.0.la
/usr/lib/libdb-4.0.so
/usr/lib/libdb_cxx-3.3.so
/usr/lib/libdb_cxx-4.0.a
/usr/lib/libdb_cxx-4.0.la
/usr/lib/libdb_cxx-4.0.so
/usr/lib/libdb_cxx.so
/usr/lib/libdb.so.2
/usr/lib/libdb.so.3

How can I specify at compilation which db library to use?
(I wouldn't want to uninstall db 4 because of dependencies...)

[Joel Crisp]

Logged In: YES
user_id=95506

Hi

You can switch the DB library by explicity naming it in the link
line (in the Makefile) and modifying the include line to import
the explicit version.

I'm also a bit concerned about the fact that the test program
works ok - this implies that DB compatibilty may not be the
real issue. How big is your db file ? Could you compress and
send it to me ?

Cydergoth