bjoernager/rust
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Error if we try to read dep during deserialization

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This commit is contained in:
Aaron Hill 2021-12-13 20:56:30 -06:00
parent 489296d825
commit 75181dc22f
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GPG key ID: B4087E510E98B164
4 changed files with 24 additions and 5 deletions
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8
compiler/rustc_query_system/src/dep_graph/graph.rs
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@ -251,6 +251,7 @@ impl<K: DepKind> DepGraph<K> {
reads: SmallVec::new(),
read_set: Default::default(),
phantom_data: PhantomData,
read_allowed: true,
}))
};
let result = K::with_deps(task_deps.as_ref(), || task(cx, arg));
@ -362,6 +363,11 @@ impl<K: DepKind> DepGraph<K> {
if let Some(task_deps) = task_deps {
let mut task_deps = task_deps.lock();
let task_deps = &mut *task_deps;
if !task_deps.read_allowed {
panic!("Illegal read of: {:?}", dep_node_index);
}
if cfg!(debug_assertions) {
data.current.total_read_count.fetch_add(1, Relaxed);
}
@ -1115,6 +1121,7 @@ pub struct TaskDeps<K> {
reads: EdgesVec,
read_set: FxHashSet<DepNodeIndex>,
phantom_data: PhantomData<DepNode<K>>,
pub read_allowed: bool,
}
impl<K> Default for TaskDeps<K> {
@ -1125,6 +1132,7 @@ impl<K> Default for TaskDeps<K> {
reads: EdgesVec::new(),
read_set: FxHashSet::default(),
phantom_data: PhantomData,
read_allowed: true,
}
}
}