Re: PQexec hangs, stuck on malloc_consolidate

#1

Tor Gunston <tor (AT) tor (DOT) to> writes:

Quote:

4) gdb backtrace shows the process stuck in malloc_consolidate:

#0 0x42074d44 in malloc_consolidate () from /lib/tls/libc.so.6
#1 0x420743c9 in _int_malloc () from /lib/tls/libc.so.6
#2 0x4207378d in malloc () from /lib/tls/libc.so.6

This suggests to me that something has clobbered malloc's internal data
structures. The most common cause of such an error is writing past the
end of a memory block obtained from malloc; other likely causes are
writing on already-freed memory, and ye ever-popular plain old wild store.

Quote:

This seems like a bug in libpq to me, but since this is my first attempt
at using Postgresql, I'm going to assume that I'm the idiot and post it
here.

I think it much more likely to be a bug in your surrounding program.
If you can provide a simple test case that reproduces the problem,
though, we can investigate the possibility of a bug in libpq.

regards, tom lane

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#2

You are correct. It was my own fault.

Thanks for your time.

On Sun, 2004-01-11 at 15:42, Tom Lane wrote:

Quote:

This suggests to me that something has clobbered malloc's internal data
structures. The most common cause of such an error is writing past the
end of a memory block obtained from malloc; other likely causes are
writing on already-freed memory, and ye ever-popular plain old wild store.

I think it much more likely to be a bug in your surrounding program.
If you can provide a simple test case that reproduces the problem,
though, we can investigate the possibility of a bug in libpq.

--
Tor Gunston <tor (AT) tor (DOT) to>

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Re: PQexec hangs, stuck on malloc_consolidate

comp.databases.postgresql.novice comp.databases.postgresql.novice

Re: PQexec hangs, stuck on malloc_consolidate - 01-11-2004 , 02:42 PM

Re: PQexec hangs, stuck on malloc_consolidate - 01-11-2004 , 10:01 PM