Prevent bug when reusing type ids in hashing (#1075)

* practice TDD * implement a hashmap 2-phases approach * use nicer types * add test for cache filling * adjust test --------- Co-authored-by: James Wilson <[email protected]>
paritytech · Jul 19, 2023 · 475a141 · 475a141
1 parent 84df959
commit 475a141
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Showing 2 changed files with 139 additions and 61 deletions.
diff --git a/metadata/src/lib.rs b/metadata/src/lib.rs
@@ -20,7 +20,7 @@ mod from_into;
 mod utils;
 
 use scale_info::{form::PortableForm, PortableRegistry, Variant};
-use std::collections::{HashMap, HashSet};
+use std::collections::HashMap;
 use std::sync::Arc;
 use utils::ordered_map::OrderedMap;
 use utils::variant_index::VariantIndex;
@@ -152,7 +152,7 @@ impl Metadata {
         Some(crate::utils::validation::get_type_hash(
             &self.types,
             id,
-            &mut HashSet::<u32>::new(),
+            &mut HashMap::new(),
         ))
     }
 }