> I feel like they’ve used this hack to sneak changes into the language which technically don’t break their Go 1 guarantee. The go 1 guarantee only says that e

> I feel like they’ve used this hack to sneak changes into the language which technically don’t break their Go 1 guarantee. The go 1 guarantee only says that existing go programs will continue to compile correctly on new releases. It doesn't say that new programs will compile correctly on old releases.