embd-input : fix returning ptr to temporary

2 files changed, 7 insertions, 6 deletions

diff --git a/examples/embd-input/embd-input-lib.cpp b/examples/embd-input/embd-input-lib.cpp
index 37de52a..570e273 100644
--- a/examples/embd-input/embd-input-lib.cpp
+++ b/examples/embd-input/embd-input-lib.cpp
@@ -210,9 +210,12 @@ llama_token sampling_id(struct MyModel* mymodel) {
 const char * sampling(struct MyModel * mymodel) {
     llama_context * ctx = mymodel->ctx;
     int id = sampling_id(mymodel);
-    std::string ret;
-    if (id == llama_token_eos()) ret = "</s>";
-    else ret = llama_token_to_str(ctx, id);
+    static std::string ret;
+    if (id == llama_token_eos()) {
+        ret = "</s>";
+    } else {
+        ret = llama_token_to_str(ctx, id);
+    }
     eval_id(mymodel, id);
     return ret.c_str();
 }
diff --git a/examples/embd-input/embd-input.h b/examples/embd-input/embd-input.h
index 4fefabd..efb5ba5 100644
--- a/examples/embd-input/embd-input.h
+++ b/examples/embd-input/embd-input.h
@@ -5,7 +5,6 @@
 #include "llama.h"
 #include "build-info.h"
 
-
 extern "C" {
 
 typedef struct MyModel {
@@ -14,14 +13,13 @@ typedef struct MyModel {
     int n_past = 0;
 } MyModel;
 
-
 struct MyModel* create_mymodel(int argc, char ** argv);
 
 bool eval_float(void* model, float* input, int N);
 bool eval_tokens(void* model, std::vector<llama_token> tokens);
 bool eval_id(struct MyModel* mymodel, int id);
 bool eval_string(struct MyModel* mymodel, const char* str);
-const char* sampling(struct MyModel* mymodel);
+const char * sampling(struct MyModel* mymodel);
 llama_token sampling_id(struct MyModel* mymodel);
 void free_mymodel(struct MyModel* mymodel);