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gdb 5.3nb1 crashing when accessing elements in static libs
- From: "Stuart Brooks" <stuartb at cat dot co dot za>
- To: <gdb at sources dot redhat dot com>
- Date: Mon, 4 Apr 2005 11:53:39 +0200
- Subject: gdb 5.3nb1 crashing when accessing elements in static libs
- Organization: Intervid Technologies
Hi,
I'm new to this list, so if this is not the right place to be posting
please let me know....
I am experiencing problems when interrogating a core file - as soon as I
try to access a global variable in a statically linked library or view
the internals of a class/struct declared in a static lib gdb either says
<unknown type>, gives garbage or segmentation faults. Details of my
system are:
OS: Netbsd 2.0
gdb: 5.3nb1
compiler: g++ 3.3
Using the same code, gdb works fine on [Netbsd 1.5.1,gdb 4.17,g++
2.91.66] and [Netbsd 1.6.2,gdb 5.0nb1,g++ 2.95.3] so it looks to me like
a conflict between g++ and gdb. The libs are being compiled with -g and
without optimizations. I'm really not too sure what to do from here. Any
ideas/help would be much appreciated ...
Thanks
Stuart
---------------------------
More info:
(gdb) bt
#0 0x4822cfeb in kill () from /usr/lib/libc.so.12
#1 0x08064f85 in Sql_Query::executeQuery() (this=0x8073220)
at sql_query.cpp:410
#2 0x0804f51b in Sql_Gateway::updateGateway(Sql_Database*, int) (
this=0x80870d0, db=0x8088080, gateway_id=1) at sql_gateway.cpp:247
...
#7 0x08049e8c in main (argc=1, argv=0xbfbff88c) at main.cpp:50
#8 0x08049b12 in ___start ()
(gdb) up
#1 0x08064f85 in Sql_Query::executeQuery() (this=0x8073220) at
sql_query.cpp:410
410 CHECK(false);
(gdb) up
#2 0x0804f51b in Sql_Gateway::updateGateway(Sql_Database*, int) (
this=0x80870d0, db=0x8088080, gateway_id=1) at sql_gateway.cpp:247
247 if (!q->executeQuery())
(gdb) p db
$1 = (<unknown type> *) 0x8088080
(gdb) p *db
$2 = <error type>
---------------------------
Also when trying to print out the value of a global pointer I get this:
(gdb) p server
$5 = 134692864