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runtime: make arrays and struct field hashes order dependent

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This commit is contained in:
Damian Gryski
2026-08-11 11:41:25 -07:00
committed by Damian Gryski
parent 7a9c649268
commit c4219439eb
1 changed files with 2 additions and 2 deletions
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src/runtime/hashmap.go
+2 -2
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@@ -807,13 +807,13 @@ func hashmapInterfaceHash(itf interface{}, seed uintptr) uint32 {
case reflectlite.Array: case reflectlite.Array:
var hash uint32 var hash uint32
for i := 0; i < x.Len(); i++ { for i := 0; i < x.Len(); i++ {
hash ^= hashmapInterfaceHash(valueInterfaceUnsafe(x.Index(i)), seed) hash = (hash * 31) ^ hashmapInterfaceHash(valueInterfaceUnsafe(x.Index(i)), seed)
} }
return hash return hash
case reflectlite.Struct: case reflectlite.Struct:
var hash uint32 var hash uint32
for i := 0; i < x.NumField(); i++ { for i := 0; i < x.NumField(); i++ {
hash ^= hashmapInterfaceHash(valueInterfaceUnsafe(x.Field(i)), seed) hash = (hash * 31) ^ hashmapInterfaceHash(valueInterfaceUnsafe(x.Field(i)), seed)
} }
return hash return hash
default: default: