> How do you run postgres under gdb?
gdb postgres
GNU gdb 4.17.0.4 with Linux/x86 hardware watchpoint and FPU support
Copyright 1998 Free Software Foundation, Inc.
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you are
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There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "i386-redhat-linux"...
(gdb) b ParseFuncOrColumn
Breakpoint 1 at 0x80e5656: file parse_func.c, line 228.
(gdb) run postgres
Starting program: /opt/postgres/current/bin/postgres postgres
DEBUG: Data Base System is starting up at Thu Jan 27 17:45:46 2000
DEBUG: Data Base System was interrupted being in production at Thu
Jan 27 17:40:53 2000
DEBUG: CheckPoint record at (0, 920)
DEBUG: Redo record at (0, 920); Undo record at (0, 0)
DEBUG: NextTransactionId: 0; NextOid: 0
DEBUG: Invalid NextTransactionId/NextOid
DEBUG: The DataBase system was not properly shut down Automatic recovery is in progress...
DEBUG: ReadRecord: invalid record len 0 in (0, 968)
DEBUG: Formatting logfile 0 seg 0 block 0 at offset 968
DEBUG: The last logId/logSeg is (0, 0)
DEBUG: Redo is not required
DEBUG: Undo is not required
DEBUG: Data Base System is in production state at Thu Jan 27 17:45:49
2000
POSTGRES backend interactive interface
$Revision: 1.139 $ $Date: 2000/01/09 12:17:33 $
backend> select b from t1 tx (b);
Breakpoint 1, ParseFuncOrColumn (pstate=0x824eb70, funcname=0x824f098
"b", fargs=0x824f0f8, agg_star=0 '\000', agg_distinct=0 '\000', curr_resno=0x824eb70, precedence=1) at
parse_func.c:228
228 Oid rettype = InvalidOid;
(gdb) l 310
...
You can also give more command line options when you type "run". A
tip: when trying to track down why elog() errors are being thrown, set
a breakpoint on elog itself and then do a "where". Use "frame #" to
bop around the stack. Been doing that a lot lately ;)
- Thomas
--
Thomas Lockhart lockhart@alumni.caltech.edu
South Pasadena, California