1 files changed, 16 insertions, 8 deletions
diff --git a/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift b/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift
index aaef0961..09b36d9e 100644
--- a/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift
+++ b/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift
@@ -164,13 +164,21 @@ actor LlamaContext {
     private func token_to_piece(token: llama_token) -> String {
         let result = UnsafeMutablePointer<Int8>.allocate(capacity: 8)
         result.initialize(repeating: Int8(0), count: 8)
-
-        let _ = llama_token_to_piece(model, token, result, 8)
-
-        let resultStr = String(cString: result)
-
-        result.deallocate()
-
-        return resultStr
+        defer {
+            result.deallocate()
+        }
+        let nTokens = llama_token_to_piece(model, token, result, 8)
+
+        if nTokens < 0 {
+            let newResult = UnsafeMutablePointer<Int8>.allocate(capacity: Int(-nTokens))
+            newResult.initialize(repeating: Int8(0), count: Int(-nTokens))
+            defer {
+                newResult.deallocate()
+            }
+            _ = llama_token_to_piece(model, token, newResult, -nTokens)
+            return String(cString: newResult)
+        } else {
+            return String(cString: result)
+        }
     }
 }