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Doc fixes for core::future::Future. #60128
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Fixed outdated reference to `waker` argument; now futures are passed a `Context`, from which one can obtain a `waker`. Cleaned up explanation of what happens when you call `poll` on a completed future. It doesn't make sense to say that `poll` implementations can't cause memory unsafety; no safe function is ever allowed to cause memory unsafety, so why mention it here? It seems like the intent is to say that the `Future` trait doesn't say what the consequences of excess polls will be, and they might be bad; but that the usual constraints that Rust imposes on any non-`unsafe` function still apply. It's also oddly specific to say 'memory corruption' instead of just 'undefined behavior'; UB is a bit jargony, so the text should provide examples.
r? @sfackler (rust_highfive has picked a reviewer for you, use r? to override) |
looks like a clear improvement, thanks! @bors r+ |
📌 Commit f8f02de has been approved by |
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Doc fixes for core::future::Future. Fixed outdated reference to `waker` argument; now futures are passed a `Context`, from which one can obtain a `waker`. Cleaned up explanation of what happens when you call `poll` on a completed future. It doesn't make sense to say that `poll` implementations can't cause memory unsafety; no safe function is ever allowed to cause memory unsafety, so why mention it here? It seems like the intent is to say that the `Future` trait doesn't say what the consequences of excess polls will be, and they might be bad; but that the usual constraints that Rust imposes on any non-`unsafe` function still apply. It's also oddly specific to say 'memory corruption' instead of just 'undefined behavior'; UB is a bit jargony, so the text should provide examples.
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Fixed outdated reference to
waker
argument; now futures are passed aContext
, from which one can obtain awaker
.Cleaned up explanation of what happens when you call
poll
on a completedfuture. It doesn't make sense to say that
poll
implementations can't causememory unsafety; no safe function is ever allowed to cause memory unsafety, so
why mention it here? It seems like the intent is to say that the
Future
traitdoesn't say what the consequences of excess polls will be, and they might be
bad; but that the usual constraints that Rust imposes on any non-
unsafe
function still apply. It's also oddly specific to say 'memory corruption'
instead of just 'undefined behavior'; UB is a bit jargony, so the text should
provide examples.