2012/4/9 Andrew Dunstan
<andrew@dunslane.net> On 04/09/2012 07:38 AM, Clover White wrote:
Hi,
I'm debugging initdb using gdb.
I found that I could not step in the function getopt_long in line 2572 in initdb.c.
I also found that the value of VAR optind never be changed. VAR optind is always equal to 1 but how could optind be larger than the value of argc(the value of argc is 6) in line 2648 and 2654.
I was so confused. Could someone give me some help? Thank you~
cheers
andrew
Hi, this is my story, it may be a little long :)
I mistook the parameter -W of initdb at the first time and used it like this:
initdb -U pgsql -W 12345 -D /home/pgsql/pg_data
And I found the database was not created in the right directory, but I could not find a log file to find out why.
So, I debug initdb and found out I have mistook the parameter -W, I should use it like this:
initdb -U pgsql -W -D /home/pgsql/pg_data
however, when I debug initdb.c, VAR optind was supported to increased after getopt_long pasered every parameter,
but it was alway equal to 1.
And there is a segment of initdb.c.
if (optind < argc)
{
do something statement
}
I print the value of optind and argc:
(gdb) p optind
$11 = 1
(gdb) p argc
$12 = 6
optind is obvious less than argc, but the statement above do not excute at all.
QUESTION:
1.why does the statement above not excute?
2.why is optind always equal to 1?
--
Clover White
