Try different approach

isolate.go

@@ -76,9 +76,9 @@ func NewIsolate(opts ...createOptions) *Isolate {
 	var cOptions C.IsolateOptions
 
 	if params.startupData != nil {
-		p := C.CString(string(params.startupData.data))
-		cOptions.snapshot_blob_data = p
-		defer C.free(unsafe.Pointer(p))
+		// p := C.CString(string(params.startupData.data))
+		cOptions.snapshot_blob_data = params.startupData.data
+		// defer C.free(unsafe.Pointer(p))
 		cOptions.snapshot_blob_raw_size = params.startupData.raw_size
 	}
 

snapshot_creator.go

@@ -9,7 +9,6 @@ package v8go
 import "C"
 import (
 	"errors"
-	"unsafe"
 )
 
 type FunctionCodeHandling int
@@ -20,7 +19,7 @@ const (
 )
 
 type StartupData struct {
-	data     []byte
+	data     *C.char
 	raw_size C.int
 	index    C.size_t
 }
@@ -72,10 +71,10 @@ func (s *SnapshotCreator) Create(functionCode FunctionCodeHandling) (*StartupDat
 	s.iso.ptr = nil
 
 	raw_size := rtn.raw_size
-	data := C.GoBytes(unsafe.Pointer(rtn.data), raw_size)
-	defer C.free(unsafe.Pointer(rtn.data))
+	// data := C.GoBytes(unsafe.Pointer(rtn.data), raw_size)
+	// defer C.free(unsafe.Pointer(rtn.data))
 
-	return &StartupData{data: data, raw_size: raw_size, index: s.index}, nil
+	return &StartupData{data: rtn.data, raw_size: raw_size, index: s.index}, nil
 }
 
 func (s *SnapshotCreator) Dispose() {

v8go.cc

@@ -306,7 +306,6 @@ size_t AddContext(SnapshotCreatorPtr snapshotCreator, ContextPtr ctx) {
   Local<Context> local_ctx = ctx->ptr.Get(iso);
   Context::Scope context_scope(local_ctx);
   return snapshotCreator->AddContext(local_ctx);
-  ;
 }
 
 RtnSnapshotBlob CreateBlob(SnapshotCreatorPtr snapshotCreator,
@@ -321,10 +320,10 @@ RtnSnapshotBlob CreateBlob(SnapshotCreatorPtr snapshotCreator,
 
   int length = startup_data.raw_size;
 
-  char* data = (char*)malloc(length);
-  memcpy(data, startup_data.data, length);
+  // char* data = (char*)malloc(length);
+  // memcpy(data, startup_data.data, length);
 
-  rtn.data = data;
+  rtn.data = startup_data.data;
   rtn.raw_size = length;
   delete snapshotCreator;
   return rtn;