PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> In my database , use pg_stat_statement, but sometime, coredump
> occurred，Details are as follows：
Not much info here. Can you install the debug symbols for the postgres
package you're using and repeat the backtrace? Another potentially useful
bit of info would be the source text for the query that's causing the
failure, which you could get with "p debug_query_string" in gdb.
regards, tom lane