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assert platform-minimum requirements at build time #3797

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merged 4 commits into from Oct 19, 2021
Merged

assert platform-minimum requirements at build time #3797

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bf8960c
assert platform-minimum requirements at build time
udoprog May 17, 2021
394dad5
perform platform check w/ attributes
udoprog May 17, 2021
ab944db
rustfmt
udoprog May 17, 2021
fbf4fb9
Merge 'upstream/master' into 'platform-minimums'
Darksonn Oct 19, 2021
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13 changes: 13 additions & 0 deletions tokio/src/lib.rs
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Expand Up @@ -350,6 +350,19 @@
//!
//! [feature flags]: https://doc.rust-lang.org/cargo/reference/manifest.html#the-features-section

// Test that pointer width is compatible. This asserts that e.g. usize is at
// least 32 bits, which a lot of components in Tokio currently assumes.
//
// TODO: improve once we have MSRV access to const eval to make more flexible.
#[cfg(not(any(
target_pointer_width = "32",
target_pointer_width = "64",
target_pointer_width = "128"
)))]
compile_error! {
"Tokio requires the platform pointer width to be 32, 64, or 128 bits"
}

// Includes re-exports used by macros.
//
// This module is not intended to be part of the public API. In general, any
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