Vinay Jain <vinayjain(at)gmail(dot)com> writes:
> select *, lower(name) from student;
> gives error: could not find block containing chunk 0x8483530
That's some sort of memory manipulation bug --- pfree'ing a wrong
pointer, likely.
> template1=# \d student
> Table "public.student"
> Column | Type | Modifiers
> --------+---------+-----------
> name | devchar |
> age | integer |
Given that a custom datatype is involved, I'd suspect the C code
for the custom type.
regards, tom lane