pgbench contrib module is doing segmentation fault on Solaris when -d option is specified without -p option specified.
This is because the -d option dumps the connection information and the default value of pgport variable is NULL which causes segmentation fault on Solaris when NULL is passed to printf function.
Attached is a trivial patch that changes the default value of pgport to empty string. PQsetdbLogin function does not make any difference between NULL and empty string.