CK Tan <cktan(at)vitessedata(dot)com> writes:
> I see in the texteq() function calls to DatumGetTextPP() are followed
> by conditional calls to PG_FREE_IF_COPY. e.g.
That's because texteq() is potentially usable as a btree index
function, and btree isn't too forgiving about leaks.
> However, in textlike(), PG_FREE_IF_COPY calls are missing.
> https://github.com/postgres/postgres/blob/master/src/backend/utils/adt/like.c#L283
textlike() isn't a member of any btree opclass.
> Is this a memory leak bug?
Not unless you can demonstrate a case where it causes problems.
For the most part, such functions run in short-lived contexts.
regards, tom lane