Revert "Reapply 5441086 lost in later compiler optz commit."

This reverts commit 18849e2.
jruby · Apr 25, 2018 · 5a8d17b · 5a8d17b
1 parent a21440b
commit 5a8d17b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/core/src/main/java/org/jruby/RubyString.java b/core/src/main/java/org/jruby/RubyString.java
@@ -1141,9 +1141,9 @@ private IRubyObject op_equalCommon(ThreadContext context, IRubyObject other) {
         return sites(context).equals.call(context, this, other, this).isTrue() ? runtime.getTrue() : runtime.getFalse();
     }
 
-    @JRubyMethod(name = "-@") // -'foo' returns deduplicated (interned) string
+    @JRubyMethod(name = "-@") // -'foo' returns frozen string
     public final IRubyObject minus_at(ThreadContext context) {
-        return context.runtime.freezeAndDedupString(this);
+        return isFrozen() ? this : context.runtime.freezeAndDedupString(this);
     }
 
     @JRubyMethod(name = "+@") // +'foo' returns modifiable string