diff --git a/build_scripts/default.config.sh b/build_scripts/default.config.sh
index fa3755e..bcadc02 100644
--- a/build_scripts/default.config.sh
+++ b/build_scripts/default.config.sh
@@ -21,7 +21,7 @@ BUILD_TEST_CPP_ARGS="$BUILD_TEST_C_ARGS"
 BUILD_TEST_LINKER_ARGS=""
 
 # build_test_dbg
-TEST_DBG_FILE=$TEST_FILE
+TEST_DBG_FILE=$TEST_FILE.dbg
 BUILD_TEST_DBG_C_ARGS="-O0 -g"
 BUILD_TEST_DBG_CPP_ARGS="$BUILD_TEST_DBG_C_ARGS"
 BUILD_TEST_DBG_LINKER_ARGS=""
diff --git a/src/Autoarr/Autoarr.c b/src/Autoarr/Autoarr.c
index 5202b6d..abff22b 100644
--- a/src/Autoarr/Autoarr.c
+++ b/src/Autoarr/Autoarr.c
@@ -46,6 +46,6 @@ kerepTypeId_define(kerepTypeId_AutoarrUnitypePtr);
 // right func to clear array of unitype values
 void __Autoarr_free_Unitype_(Autoarr(Unitype)* ar, bool freePtr){
     Autoarr_foreach(ar, u,Unitype_free(u));
-    if(freePtr) Autoarr_free(ar, freePtr);
+    __Autoarr_free_Unitype(ar, freePtr);
 }
 void ____Autoarr_free_Unitype_(void* ar) { __Autoarr_free_Unitype_((Autoarr(Unitype)*)ar, false); }
\ No newline at end of file
diff --git a/src/Autoarr/Autoarr_declare.h b/src/Autoarr/Autoarr_declare.h
index c9434a3..404a361 100644
--- a/src/Autoarr/Autoarr_declare.h
+++ b/src/Autoarr/Autoarr_declare.h
@@ -29,6 +29,7 @@ typedef struct Autoarr_##type{\
 } Autoarr_##type;\
 \
 Autoarr_##type* __Autoarr_create_##type(uint16 max_blocks_count, uint16 max_block_length);\
+void __Autoarr_free_##type(Autoarr_##type* ar, bool freePtr);\
 void ____Autoarr_free_##type(void* ar);
 
 #define Autoarr(type) Autoarr_##type
diff --git a/src/Hashtable/Hashtable.c b/src/Hashtable/Hashtable.c
index d68c6c7..4b1b921 100644
--- a/src/Hashtable/Hashtable.c
+++ b/src/Hashtable/Hashtable.c
@@ -50,7 +50,8 @@ void Hashtable_expand(Hashtable* ht){
             Autoarr(KVPair)* newar=newrows[newrown];
             Autoarr_add(newar,p);
         }
-        Autoarr_free(ar, true);
+        // there is no need to free array values, because they are copied into new array
+        __Autoarr_free_KVPair(ar, true);
     }
 
     free(ht->rows);
diff --git a/src/Hashtable/KeyValuePair.c b/src/Hashtable/KeyValuePair.c
index 845ead5..22c3f5e 100644
--- a/src/Hashtable/KeyValuePair.c
+++ b/src/Hashtable/KeyValuePair.c
@@ -17,7 +17,7 @@ void __KVPair_free(void* p){ KVPair_free(*(KVPair*)p); }
 // func for  KVP array clearing
 void __Autoarr_free_KVPair_(Autoarr_KVPair* ar, bool freePtr){
     Autoarr_foreach(ar,k,KVPair_free(k));
-    Autoarr_free(ar, freePtr);
+    __Autoarr_free_KVPair(ar, freePtr);
 }
 void ____Autoarr_free_KVPair_(void* ar){
     __Autoarr_free_KVPair_((Autoarr_KVPair*)ar, false);
diff --git a/src/SearchTree/SearchTree.c b/src/SearchTree/SearchTree.c
index 18088ab..23aa853 100644
--- a/src/SearchTree/SearchTree.c
+++ b/src/SearchTree/SearchTree.c
@@ -36,7 +36,6 @@ void __STNode_free(void* _node){
     }
     if(node->value.VoidPtr) 
         Unitype_free(node->value);
-    free(node);
 }
 void STNode_free(STNode* node){
     __STNode_free(node);
diff --git a/src/base/unitype.c b/src/base/unitype.c
index 005cee5..8a555c5 100644
--- a/src/base/unitype.c
+++ b/src/base/unitype.c
@@ -19,17 +19,17 @@ char* sprintuni(Unitype v){
     if(v.typeId==kerepTypeId_Null)
         sprintf_s(buf, BUFSIZE, "{Null}");
     else if(v.typeId==kerepTypeId_Float64)
-        sprintf_s(buf, BUFSIZE, "{%s ) %lf}", type.name,v.Float64);
+        sprintf_s(buf, BUFSIZE, "{%s : %lf}", type.name,v.Float64);
     else if(v.typeId==kerepTypeId_Bool || v.typeId==kerepTypeId_UInt64)
-        sprintf_s(buf, BUFSIZE, "{%s ) " IFWIN("%llu", "%lu") "}", type.name,v.UInt64);
+        sprintf_s(buf, BUFSIZE, "{%s : " IFWIN("%llu", "%lu") "}", type.name,v.UInt64);
     else if(v.typeId==kerepTypeId_Int64)
-        sprintf_s(buf, BUFSIZE, "{%s ) " IFWIN("%lld", "%ld") "}", type.name,v.Int64);
+        sprintf_s(buf, BUFSIZE, "{%s : " IFWIN("%lld", "%ld") "}", type.name,v.Int64);
     else if(v.typeId==kerepTypeId_CharPtr){
         size_t newBUFSIZE=cptr_length(v.VoidPtr) + BUFSIZE/2;
         buf=realloc(buf, newBUFSIZE);
-        sprintf_s(buf, BUFSIZE, "{%s ) \"%s\"}", type.name,(char*)v.VoidPtr);
+        sprintf_s(buf, BUFSIZE, "{%s : \"%s\"}", type.name,(char*)v.VoidPtr);
     }
-    else sprintf_s(buf, BUFSIZE, "{%s ) %p}", type.name,v.VoidPtr);
+    else sprintf_s(buf, BUFSIZE, "{%s : %p}", type.name,v.VoidPtr);
     return buf;
 }