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awooter: fix an API soundness issue

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This commit is contained in:
Lofty 2022-11-23 03:47:04 +00:00
parent 2662354aae
commit d27bcbf19e
1 changed files with 8 additions and 1 deletions
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9
common/route/awooter/rust/src/npnr.rs
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@ -54,7 +54,14 @@ pub struct PortRef {
}
impl PortRef {
pub fn cell(&self) -> Option<&mut CellInfo> {
pub fn cell(&self) -> Option<&CellInfo> {
// SAFETY: handing out &s is safe when we have &self.
unsafe { npnr_portref_cell(self).as_ref() }
}
pub fn cell_mut(&mut self) -> Option<&mut CellInfo> {
// SAFETY: handing out &mut is safe when we have &mut self
// as getting multiple &mut CellInfo would require multiple &mut PortRef.
unsafe { npnr_portref_cell(self).as_mut() }
}
}