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tools: add a static size assertion

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
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Wolfgang Bumiller 2019-08-23 11:26:57 +02:00
parent e1ebf9b67e
commit f1351e7e41
1 changed files with 10 additions and 0 deletions
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10
proxmox-tools/src/lib.rs
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@ -19,6 +19,16 @@ macro_rules! offsetof {
}; };
} }
/// Static assertions
#[macro_export]
macro_rules! static_assert_size {
($ty:ty, $size:expr) => {
const _: fn() -> () = || {
let _ = ::std::mem::transmute::<[u8; $size], $ty>;
};
};
}
/// Macro to write error-handling blocks (like perl eval {}) /// Macro to write error-handling blocks (like perl eval {})
/// ///
/// #### Example: /// #### Example: