Eliot Miranda uploaded a new version of Kernel to project The Trunk:
http://source.squeak.org/trunk/Kernel-eem.1410.mcz

==================== Summary ====================

Name: Kernel-eem.1410
Author: eem
Time: 12 September 2021, 10:24:18.099359 pm
UUID: 80f1546b-b2a1-4ffb-a174-d21d2eb2eb67
Ancestors: Kernel-ul.1409

Since Compiledmethod>>= is true if method classes differ, a COmpiledMethod's hash must not tae methodClass into account.

=============== Diff against Kernel-ul.1409 ===============

Item was changed:
  ----- Method: CompiledCode>>hash (in category 'comparing') -----
  hash
  	"CompiledMethod>>#= compares code, i.e. same literals and same bytecode.
  	 So we look at the header, methodClass and some bytes between initialPC and endPC,
  	 but /not/ the selector because the equal method does not compare selectors.
  	 Note that we must override ByteArray>hash which looks at all bytes of the receiver.
+ 	 Using bytes from the pointer part of a CompiledMethod can lead to a variable hash
- 	 Using bytes from the pointer part of a COmpiledmethod can lead to a variable hash
  	 if and when when the GC moves literals in the receiver."
  	| initialPC endPC hash |
  	initialPC := self initialPC.
  	endPC := self endPC.
+ 	hash := self species hash + self header + initialPC + endPC bitAnd: 16rFFFFFFF.
- 	hash := self species hash + self header + initialPC + endPC + self methodClass hash bitAnd: 16rFFFFFFF.
  	"sample approximately 20 bytes"
  	initialPC to: endPC by: (endPC - initialPC // 20 max: 1) do:
  		[:i| hash := hash + (self at: i)].
  	^hash
  
  	"(CompiledMethod>>#hash) hash"!