fix insert error

source/libs/index/src/index_fst.c

@@ -273,16 +273,16 @@ void fstStateCompileForAnyTrans(FstCountingWriter *w, CompiledAddr addr, FstBuil
     if (FST_BUILDER_NODE_IS_FINAL(node)) {
       fstCountingWriterPackUintIn(w, node->finalOutput, oSize);
     }
-    for (size_t i = 0; i < sz; i++) {
+    for (int32_t i = sz - 1; i >= 0; i--) {
       FstTransition *t = taosArrayGet(node->trans, i);
       fstCountingWriterPackUintIn(w, t->out, oSize);
     }
   } 
-  for (size_t i = 0; i < sz; i++) {
+  for (int32_t i = sz - 1; i >= 0; i--) {
       FstTransition *t = taosArrayGet(node->trans, i);
       fstPackDeltaIn(w, addr, t->addr, tSize);
   }
-  for (size_t i = 0; i < sz; i++) {
+  for (int32_t i = sz - 1; i >= 0; i--) {
      FstTransition *t = taosArrayGet(node->trans, i);
      fstCountingWriterWrite(w, (char *)&t->inp, 1);
       //fstPackDeltaIn(w, addr, t->addr, tSize);

source/libs/index/test/indexTests.cpp

@@ -63,7 +63,7 @@
 //}
 
 int main(int argc, char** argv) {
-  FstBuilder *b = fstBuilderCreate(NULL, 1);
+  FstBuilder *b = fstBuilderCreate(NULL, 0);
   {
     std::string str("abc");
     FstSlice key = fstSliceCreate((uint8_t *)str.c_str(), str.size());
@@ -74,11 +74,13 @@ int main(int argc, char** argv) {
   //std::string str1("bcd");
   //FstSlice key1 = fstSliceCreate((uint8_t *)str1.c_str(), str1.size());
   //Output   val2 = 10;
+  //
+   
   {
-    //std::string str("bcd");
-    //FstSlice key = fstSliceCreate((uint8_t *)str.c_str(), str.size());
-    //Output   val = 1;
-    //fstBuilderInsert(b, key, val); 
+    std::string str("adc");
+    FstSlice key = fstSliceCreate((uint8_t *)str.c_str(), str.size());
+    Output   val = 2;
+    fstBuilderInsert(b, key, val); 
   } 
   //fstBuilderInsert(b, key1, val2); 
   fstBuilderFinish(b);