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Create new CrateNum only after knowing it's going to succeed

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This commit is contained in:
Oli Scherer 2024-03-26 16:42:02 +00:00
parent 43a0686f8d
commit 10be74569c
1 changed files with 1 additions and 1 deletions
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2
compiler/rustc_metadata/src/creader.rs
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@ -167,7 +167,6 @@ pub fn from_tcx_mut(tcx: TyCtxt<'_>) -> FreezeWriteGuard<'_, CStore> {
fn intern_stable_crate_id(&mut self, root: &CrateRoot) -> Result<CrateNum, CrateError> {
assert_eq!(self.metas.len(), self.stable_crate_ids.len());
let num = CrateNum::new(self.stable_crate_ids.len());
if let Some(&existing) = self.stable_crate_ids.get(&root.stable_crate_id()) {
// Check for (potential) conflicts with the local crate
if existing == LOCAL_CRATE {
@ -181,6 +180,7 @@ fn intern_stable_crate_id(&mut self, root: &CrateRoot) -> Result<CrateNum, Crate
}
} else {
self.metas.push(None);
let num = CrateNum::new(self.stable_crate_ids.len());
self.stable_crate_ids.insert(root.stable_crate_id(), num);
Ok(num)
}