Grzegorz Jaskiewicz <gj(at)pointblue(dot)com(dot)pl> writes:
> I created custom type, and attempt to create gist indexing for it, to
> make search wind quick.
> on select from * where something << 'something'; I get:
> WARNING: problem in alloc set GiST temporary context: detected write
> past chunk end in block 0x843e6e0, chunk 0x843e994
> Can someone tell me please, what might be the cause?
Looks like you're scribbling on memory that doesn't belong to you.
Check for miscomputed palloc request sizes, etc.
regards, tom lane