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BackendRepr::is_signed: comment why this may panics #139105

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Mar 30, 2025
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BackendRepr::is_signed: comment why this may panics #139105

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3 changes: 2 additions & 1 deletion compiler/rustc_abi/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1462,7 +1462,8 @@ impl BackendRepr {
!self.is_unsized()
}

/// Returns `true` if this is a single signed integer scalar
/// Returns `true` if this is a single signed integer scalar.
/// Sanity check: panics if this is not a scalar type (see PR #70189).
#[inline]
pub fn is_signed(&self) -> bool {
match self {
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