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Check that trait_map is not moved twice.

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This commit is contained in:
Camille GILLOT 2021-05-29 22:56:23 +02:00
parent 273778086c
commit c11691b460
1 changed files with 9 additions and 0 deletions
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9
compiler/rustc_resolve/src/lib.rs
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@ -910,6 +910,8 @@ pub struct Resolver<'a> {
extern_crate_map: FxHashMap<LocalDefId, CrateNum>,
export_map: ExportMap<LocalDefId>,
trait_map: NodeMap<Vec<TraitCandidate>>,
#[cfg(debug_assertions)]
took_trait_map: bool,
/// A map from nodes to anonymous modules.
/// Anonymous modules are pseudo-modules that are implicitly created around items
@ -1139,6 +1141,11 @@ impl ResolverAstLowering for Resolver<'_> {
}
fn trait_map(&mut self) -> NodeMap<Vec<TraitCandidate>> {
#[cfg(debug_assertions)]
{
debug_assert!(!self.took_trait_map);
self.took_trait_map = true;
}
std::mem::take(&mut self.trait_map)
}
@ -1287,6 +1294,8 @@ impl<'a> Resolver<'a> {
extern_crate_map: Default::default(),
export_map: FxHashMap::default(),
trait_map: Default::default(),
#[cfg(debug_assertions)]
took_trait_map: false,
underscore_disambiguator: 0,
empty_module,
module_map,