I have problems on how to debug PostgreSQL on Linux using GDB. I made
some changes to src/backend/utils/sort/tuplesort.c but it hangs while
performing run formation (where my changes are).
I configured it using
./configure --prefix="/usr/local/pgsql/8.3/" CFLAGS="-O0 -DTRACE_SORT"
--enable-debug --enable-cassert --enable-depend
and trying to debug it using
'gdb postmaster'
(which revealed to be not a very good idea) and
'gdb pg_ctl' followed by 'run -D /usr/local/psql/data'
This last choice allowed me to set a breackpoint on puttuple_common
(contained into tuplesort.c) but then I'm unable to run 'psql'.
http://pastebin.com/m6a97b4dd
Run psql, find the process ID of the backend (server) process by
executing the command "SELECT * FROM pg_backend_pid();",
then attach to that process with gdb and set a breakpoint in your new
code; finally, go back to your psql session and execute a command that
exercises your code.
-- Korry
--
Korry Douglas <[EMAIL PROTECTED]>
EnterpriseDB http://www.enterprisedb.com
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