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libsyntax_pos: Don't use packed attribute for Span on sparc64/v9 #45679

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libsyntax_pos: Don't use packed attribute for Span on sparc64/v9 #45679

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4 changes: 3 additions & 1 deletion src/libsyntax_pos/span_encoding.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -25,8 +25,10 @@ use std::cell::RefCell;
/// The primary goal of `Span` is to be as small as possible and fit into other structures
/// (that's why it uses `packed` as well). Decoding speed is the second priority.
/// See `SpanData` for the info on span fields in decoded representation.

/// FIXME: Don't use packed attribute on sparc64/v9, see: #45509
#[derive(Clone, Copy, PartialEq, Eq, Hash)]
#[repr(packed)]
#[cfg_attr(not(any(target_arch = "sparc64", target_arch = "sparcv9")), repr(packed))]
pub struct Span(u32);

/// Dummy span, both position and length are zero, syntax context is zero as well.
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