Fix compact mode guard in ArrayArena byte_size

cursoragent · cursoragent · commit 536d836a13dc · 2026-03-09T16:38:34.000Z
diff --git a/include/simfil/model/arena.h b/include/simfil/model/arena.h
@@ -122,7 +122,7 @@ class ArrayArena
      * @return The current size, in bytes, of the array arena if serialized.
      */
     [[nodiscard]] size_t byte_size() const {
-        if (compactHeads_) {
+        if (heads_.empty() && compactHeads_) {
             return compactHeads_->byte_size() + data_.byte_size();
         }
         auto result = heads_.size() * sizeof(CompactArrayChunk);

Original file line number	Diff line number	Diff line change
`@@ -122,7 +122,7 @@ class ArrayArena`
`122`	`122`	`* @return The current size, in bytes, of the array arena if serialized.`
`123`	`123`	`*/`
`124`	`124`	`[[nodiscard]] size_t byte_size() const {`
`125`		`- if (compactHeads_) {`
	`125`	`+ if (heads_.empty() && compactHeads_) {`
`126`	`126`	`return compactHeads_->byte_size() + data_.byte_size();`
`127`	`127`	`}`
`128`	`128`	`auto result = heads_.size() * sizeof(CompactArrayChunk);`