Matthew Riley 4398295954 Use select to notice timeouts ... Before we were reading a boolean variable that was set by another goroutine. Without any sync primitives, I think Go is within its rights to optimize that away. We now require that `ctx` is non-`nil`. This was already true for all callers and consistent with other Go functions that take contexts.		2018-05-17 13:51:00 -07:00
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until.go	Use select to notice timeouts	2018-05-17 13:51:00 -07:00