Possession of large enough a quantity means you're automatically considered a dealer, and we're not talking huge quantities either: 30g (1 oz) of cocaine translates to a mandatory death penalty. This extends to things like having the key to a locker containing drugs.
Yes. And I wish they would move to a policy of legalise-and-regulate-(-and-tax).
But at least they manage to make their prohibition policy actually effective: drugs are hard to get, and not a lot of people are actually behind bars or executed for trading.
(Compare with eg the US which incarcerates a lot of people, but the drug trade goes on regardless.)
The quantities listed in https://en.wikipedia.org/wiki/Capital_punishment_in_Singapor... seems higher than what a user would have on them.