diff options
Diffstat (limited to 'compiler/rustc_query_system')
| -rw-r--r-- | compiler/rustc_query_system/src/dep_graph/serialized.rs | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/compiler/rustc_query_system/src/dep_graph/serialized.rs b/compiler/rustc_query_system/src/dep_graph/serialized.rs index 2c6fd7d494f..8bd147c98fe 100644 --- a/compiler/rustc_query_system/src/dep_graph/serialized.rs +++ b/compiler/rustc_query_system/src/dep_graph/serialized.rs @@ -252,7 +252,14 @@ impl SerializedDepGraph { .collect(); for (idx, node) in nodes.iter_enumerated() { - index[node.kind.as_usize()].insert(node.hash, idx); + if index[node.kind.as_usize()].insert(node.hash, idx).is_some() { + panic!( + "Error: A dep graph node does not have an unique index. \ + Running a clean build on a nightly compiler with `-Z incremental-verify-ich` \ + can help narrow down the issue for reporting. A clean build may also work around the issue.\n + DepNode: {node:?}" + ) + } } Arc::new(SerializedDepGraph { |