Hi, On Sun, Feb 20, 2022 at 07:23:56PM +0900, Dong Wook Lee wrote: > Hi hackers, > I've read in this blog ( > http://big-elephants.com/2015-10/writing-postgres-extensions-part-i/) > and I wrote an extension about base36_encode with c code > but when I executed a query like this below I got a warning below. > > ``` > postgres=# SELECT base36_encode(123); > WARNING: problem in alloc set ExprContext: detected write past chunk end > in block 0x55fb75334d40, chunk 0x55fb75334d68 > WARNING: problem in alloc set ExprContext: detected write past chunk end > in block 0x55fb75334d40, chunk 0x55fb75334d68 > base36_encode > --------------- > 3f > (1 row) > ``` > > I don't know what this warning means and how I can fix it.
It means that you have some problem in your memory allocation. You can refer to src/backend/utils/mmgr/aset.c for more details on those safety checks.
