BUG #14735: A core dumpe is reported in the source of PostgreSQL

The following bug has been logged on the website:

Bug reference: 14735
Logged by: ayi zhou
Email address: ayi_zhou(at)aliyun(dot)com
PostgreSQL version: Unsupported/Unknown
Operating system: centos66-2 2.6.32-504.el6.x86_64
Description:

PostgreSQL version: 8.4.20-6.el6.x86_64
OS: centos66-2 2.6.32-504.el6.x86_64

Here is the core dump information:

#0 0x00007f4ba2bd0569 in tcmalloc::CentralFreeList::FetchFromSpans() ()
from /usr/lib64/libtcmalloc.so.4
#1 0x00007f4ba2bd0ae7 in tcmalloc::CentralFreeList::RemoveRange(void**,
void**, int) () from /usr/lib64/libtcmalloc.so.4
#2 0x00007f4ba2bd48b5 in
tcmalloc::ThreadCache::FetchFromCentralCache(unsigned long, unsigned long)
() from /usr/lib64/libtcmalloc.so.4
#3 0x00007f4ba2be2b5b in tc_malloc () from /usr/lib64/libtcmalloc.so.4
#4 0x00007f4ba18b98c8 in PQmakeEmptyPGresult () from
/usr/lib64/libpq.so.5
#5 0x00007f4ba18c25fe in ?? () from /usr/lib64/libpq.so.5
#6 0x00007f4ba18ba488 in PQgetResult () from /usr/lib64/libpq.so.5
#7 0x00007f4ba18ba758 in ?? () from /usr/lib64/libpq.so.5
#8 0x0000000000466fd9 in executeDatabaseStatementScalar
(statement=Unhandled dwarf expression opcode 0xf3
)

thanks for your help inadvance!

Regards
ayi Zhou