Set FSTRING flag on deduplicated strings

headius · Mar 30, 2024 · d8f1d82 · d8f1d82
1 parent 31807bc
commit d8f1d82
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diff --git a/core/src/main/java/org/jruby/ObjectFlags.java b/core/src/main/java/org/jruby/ObjectFlags.java
@@ -22,6 +22,7 @@ public interface ObjectFlags {
 
     int CR_7BIT_F    = registry.newFlag(RubyString.class);
     int CR_VALID_F   = registry.newFlag(RubyString.class);
+    int FSTRING      = registry.newFlag(RubyString.class);
 
     int MATCH_BUSY = registry.newFlag(RubyMatchData.class);
 

diff --git a/core/src/main/java/org/jruby/Ruby.java b/core/src/main/java/org/jruby/Ruby.java
@@ -4874,6 +4874,7 @@ public RubyString freezeAndDedupString(RubyString string) {
 
             // Never use incoming value as key
             deduped = string.strDup(this);
+            deduped.setFlag(ObjectFlags.FSTRING, true);
             deduped.setFrozen(true);
 
             final WeakReference<RubyString> weakref = new WeakReference<>(deduped);