Comparing a map and a record with = produces different results based on argument order

Description

The result of comparing a map and a record is different based on the order of the arguments to =:

The result is the same for the code above with tags r1.7.228, r1.8.34 and 1.9.293.

This seems to be rooted in the fact that when a map is the first argument, the function used to make the comparison is the implementation of equiv from the map. But when a record is the first argument the implementation used is the one from the record, which checks if the types of both arguments are equal.

In Clojure JVM the implementation of equiv in clojure.lang.APersistentMap checks for the marker interface clojure.lang.MapEquivalence, which avoids this situation.

Environment

Mac OS X
V8
java version "1.8.0_73"
Java(TM) SE Runtime Environment (build 1.8.0_73-b02)
Java HotSpot(TM) 64-Bit Server VM (build 25.73-b02, mixed mode)

Status

Assignee

Unassigned

Reporter

Juan Facorro

Labels

None

Approval

None

Patch

None

Fix versions

Affects versions

Priority

Minor
Configure