diff --git a/.vscode/launch.json b/.vscode/launch.json
index 253788a..887a884 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -5,10 +5,10 @@
             "name": "(gdb) Debug",
             "type": "cppdbg",
             "request": "launch",
-            "program": "$kerep.com",
+            "program": "${workspaceFolder}/bin/kerep.com",
+            "cwd": "${workspaceFolder}/bin",
             "preLaunchTask": "build_exec_dbg",
             "stopAtEntry": false,
-            "cwd": "${fileDirname}/bin",
             "externalConsole": false,
             "MIMode": "gdb",
             "miDebuggerPath": "gdb",
@@ -31,8 +31,8 @@
             "request": "launch",
             "preLaunchTask": "build_exec_dbg",
             "program": "${workspaceFolder}/bin/kerep.com",
+            "cwd": "${workspaceFolder}/bin",
             "stopAtEntry": false,
-            "cwd": "${workspaceFolder}",
             "externalConsole": false,
             "miDebuggerPath": "/usr/bin/gdb",
             "MIMode": "gdb",
@@ -48,8 +48,8 @@
             "type": "cppvsdbg",
             "request": "launch",
             "preLaunchTask": "build_dbg",
-            "cwd": "${workspaceFolder}\\bin",
             "program": "${workspaceFolder}\\bin\\kerep.com",
+            "cwd": "${workspaceFolder}\\bin",
             "stopAtEntry": false,
             "console": "integratedTerminal"
         }
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index 7fb803b..f24315b 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -3,32 +3,6 @@
     
     "version": "2.0.0",
     "tasks": [
-      {
-        "label": "build_exec",
-        "detail": "build project",
-        "type": "cppbuild",
-        "command": "make",
-        "args": [
-            "build_exec"
-        ],
-        "options": {
-          "cwd": "${workspaceFolder}"
-        },
-        "problemMatcher": ["$gcc"],
-        "group": {
-          "kind": "build",
-          "isDefault": true
-        },
-        "presentation": {
-          "echo": true,
-          "reveal": "always",
-          "focus": true,
-          "panel": "shared",
-          "showReuseMessage": false,
-          "clear": true
-        }
-      },
-
       {
         "label": "build_exec_dbg",
         "detail": "build project with debug symbols",
diff --git a/cbuild b/cbuild
index 47808ee..15a9661 160000
--- a/cbuild
+++ b/cbuild
@@ -1 +1 @@
-Subproject commit 47808ee989c85b6d011851dbec24c39580b55cbb
+Subproject commit 15a9661c467facf65b2155eab3fad1ecf5f0c945
diff --git a/default.config b/default.config
index 23c2c06..3719daa 100644
--- a/default.config
+++ b/default.config
@@ -1,5 +1,5 @@
 #!/bin/bash
-CBUILD_VERSION=3
+CBUILD_VERSION=4
 CONFIG_VERSION=4
 
 PROJECT=kerep
@@ -26,7 +26,7 @@ case $TASK in
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS=""
         TASK_SCRIPT=cbuild/default_tasks/build_exec.sh
-        PRE_TASK_SCRIPT=tasks/pre_build.sh
+        PRE_TASK_SCRIPT=
         POST_TASK_SCRIPT=
         ;;
     build_exec_dbg)
@@ -34,7 +34,7 @@ case $TASK in
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS=""
         TASK_SCRIPT=cbuild/default_tasks/build_exec.sh
-        PRE_TASK_SCRIPT=tasks/pre_build.sh
+        PRE_TASK_SCRIPT=
         POST_TASK_SCRIPT=
         ;;
     build_shared_lib)
@@ -42,7 +42,7 @@ case $TASK in
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="-Wl,-soname,$SHARED_LIB_FILE"
         TASK_SCRIPT=cbuild/default_tasks/build_shared_lib.sh
-        PRE_TASK_SCRIPT=tasks/pre_build.sh
+        PRE_TASK_SCRIPT=
         POST_TASK_SCRIPT=
         ;;
     build_shared_lib_dbg)
@@ -50,21 +50,21 @@ case $TASK in
         CPP_ARGS="$C_ARGS"
         LINKER_ARGS="-Wl,-soname,$SHARED_LIB_FILE"
         TASK_SCRIPT=cbuild/default_tasks/build_shared_lib.sh
-        PRE_TASK_SCRIPT=tasks/pre_build.sh
+        PRE_TASK_SCRIPT=
         POST_TASK_SCRIPT=
         ;;
     build_static_lib)
         C_ARGS="-O2 -fpic"
         CPP_ARGS="$C_ARGS" 
         TASK_SCRIPT=cbuild/default_tasks/build_static_lib.sh
-        PRE_TASK_SCRIPT=tasks/pre_build.sh
+        PRE_TASK_SCRIPT=
         POST_TASK_SCRIPT=
         ;;
     build_static_lib_dbg)
         C_ARGS="-O0 -g"
         CPP_ARGS="$C_ARGS" 
         TASK_SCRIPT=cbuild/default_tasks/build_static_lib.sh
-        PRE_TASK_SCRIPT=tasks/pre_build.sh
+        PRE_TASK_SCRIPT=
         POST_TASK_SCRIPT=
         ;;
     exec)
@@ -75,3 +75,14 @@ case $TASK in
         TASK_SCRIPT=cbuild/default_tasks/valgrind.sh
         ;;
 esac
+
+case $OS in
+    WINDOWS)
+        ;;
+    LINUX)
+        ;;
+    *)
+        printf "${RED}operating system $OS has no configuration variants\n"
+        exit 1
+        ;;
+esac
diff --git a/kerep.vcxproj b/kerep.vcxproj
index 33807a4..2a8ffb6 100644
--- a/kerep.vcxproj
+++ b/kerep.vcxproj
@@ -19,46 +19,88 @@
     </ProjectConfiguration>
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="src\Array\Array.c" />
     <ClCompile Include="src\Autoarr\Autoarr.c" />
     <ClCompile Include="src\Autoarr\Autoarr_KVPair_exported.c" />
+    <ClCompile Include="src\Autoarr\Autoarr_Unitype.c" />
     <ClCompile Include="src\Autoarr\Autoarr_Unitype_exported.c" />
     <ClCompile Include="src\base\cptr.c" />
+    <ClCompile Include="src\base\endian.c" />
     <ClCompile Include="src\base\errors.c" />
-    <ClCompile Include="src\base\types.c" />
+    <ClCompile Include="src\base\type_system\base_toString.c" />
+    <ClCompile Include="src\base\type_system\init.c" />
+    <ClCompile Include="src\base\type_system\kt_functions.c" />
+    <ClCompile Include="src\base\type_system\unitype.c" />
     <ClCompile Include="src\DtsodParser\DtsodV24.c" />
     <ClCompile Include="src\DtsodParser\DtsodV24_deserialize.c" />
     <ClCompile Include="src\DtsodParser\DtsodV24_exported.c" />
     <ClCompile Include="src\DtsodParser\DtsodV24_serialize.c" />
+    <ClCompile Include="src\Filesystem\dir.c" />
+    <ClCompile Include="src\Filesystem\file.c" />
+    <ClCompile Include="src\Filesystem\path.c" />
     <ClCompile Include="src\HashFunctions\hash.c" />
     <ClCompile Include="src\Hashtable\Hashtable.c" />
     <ClCompile Include="src\Hashtable\KeyValuePair.c" />
+    <ClCompile Include="src\kprint\kprint.c" />
+    <ClCompile Include="src\kprint\kprintf.c" />
+    <ClCompile Include="src\random\splitmix64\splitmix64.c" />
+    <ClCompile Include="src\random\xoroshiro\32bitValue\xoroshiro64star.c" />
+    <ClCompile Include="src\random\xoroshiro\32bitValue\xoroshiro64starstar.c" />
+    <ClCompile Include="src\random\xoroshiro\64bitValue\xoroshiro128plus.c" />
+    <ClCompile Include="src\random\xoroshiro\64bitValue\xoroshiro128plusplus.c" />
+    <ClCompile Include="src\random\xoroshiro\64bitValue\xoroshiro128starstar.c" />
+    <ClCompile Include="src\random\xoshiro\32bitValue\xoshiro128plus.c" />
+    <ClCompile Include="src\random\xoshiro\32bitValue\xoshiro128plusplus.c" />
+    <ClCompile Include="src\random\xoshiro\32bitValue\xoshiro128starstar.c" />
+    <ClCompile Include="src\random\xoshiro\64bitValue\xoshiro256plus.c" />
+    <ClCompile Include="src\random\xoshiro\64bitValue\xoshiro256plusplus.c" />
+    <ClCompile Include="src\random\xoshiro\64bitValue\xoshiro256starstar.c" />
     <ClCompile Include="src\SearchTree\SearchTree.c" />
     <ClCompile Include="src\String\string.c" />
     <ClCompile Include="src\String\StringBuilder.c" />
-    <ClCompile Include="tests\main.cpp" />
-    <ClCompile Include="tests\test_autoarr.c" />
-    <ClCompile Include="tests\test_dtsod.c" />
-    <ClCompile Include="tests\test_hashtable.c" />
-    <ClCompile Include="tests\test_hash_functions.c" />
     <ClCompile Include="tests\test_marshalling.c" />
-    <ClCompile Include="tests\test_safethrow.c" />
-    <ClCompile Include="tests\test_searchtree.c" />
-    <ClCompile Include="tests\test_string.c" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="src\Array\Array.h" />
+    <ClInclude Include="src\Array\Array_declare.h" />
+    <ClInclude Include="src\Array\Array_define.h" />
     <ClInclude Include="src\Autoarr\Autoarr.h" />
     <ClInclude Include="src\Autoarr\Autoarr_declare.h" />
     <ClInclude Include="src\Autoarr\Autoarr_define.h" />
+    <ClInclude Include="src\Autoarr\Autoarr_Unitype.h" />
     <ClInclude Include="src\base\base.h" />
     <ClInclude Include="src\base\cptr.h" />
+    <ClInclude Include="src\base\endian.h" />
     <ClInclude Include="src\base\errors.h" />
     <ClInclude Include="src\base\optime.h" />
     <ClInclude Include="src\base\std.h" />
-    <ClInclude Include="src\base\types.h" />
+    <ClInclude Include="src\base\type_system\base_toString.h" />
+    <ClInclude Include="src\base\type_system\init.h" />
+    <ClInclude Include="src\base\type_system\ktDescriptor.h" />
+    <ClInclude Include="src\base\type_system\ktid.h" />
+    <ClInclude Include="src\base\type_system\kt_functions.h" />
+    <ClInclude Include="src\base\type_system\type_system.h" />
+    <ClInclude Include="src\base\type_system\unitype.h" />
     <ClInclude Include="src\DtsodParser\DtsodV24.h" />
+    <ClInclude Include="src\Filesystem\dir.h" />
+    <ClInclude Include="src\Filesystem\file.h" />
+    <ClInclude Include="src\Filesystem\filesystem.h" />
+    <ClInclude Include="src\Filesystem\path.h" />
     <ClInclude Include="src\HashFunctions\hash.h" />
     <ClInclude Include="src\Hashtable\Hashtable.h" />
     <ClInclude Include="src\Hashtable\KeyValuePair.h" />
+    <ClInclude Include="src\kprint\kprint.h" />
+    <ClInclude Include="src\kprint\kprintf.h" />
+    <ClInclude Include="src\kprint\kprint_colors.h" />
+    <ClInclude Include="src\kprint\kprint_format.h" />
+    <ClInclude Include="src\random\krandom.h" />
+    <ClInclude Include="src\random\splitmix64\splitmix64.h" />
+    <ClInclude Include="src\random\xoroshiro\32bitValue\xoroshiro64.h" />
+    <ClInclude Include="src\random\xoroshiro\64bitValue\xoroshiro128.h" />
+    <ClInclude Include="src\random\xoroshiro\xoroshiro.h" />
+    <ClInclude Include="src\random\xoshiro\32bitValue\xoshiro128.h" />
+    <ClInclude Include="src\random\xoshiro\64bitValue\xoshiro256.h" />
+    <ClInclude Include="src\random\xoshiro\xoshiro.h" />
     <ClInclude Include="src\SearchTree\SearchTree.h" />
     <ClInclude Include="src\String\string.h" />
     <ClInclude Include="src\String\StringBuilder.h" />
@@ -156,7 +198,7 @@
       <LanguageStandard_C>stdc17</LanguageStandard_C>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <PrecompiledHeaderOutputFile />
-      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14  -Wno-clang-analyzer-valist.Uninitialized %(AdditionalOptions)</AdditionalOptions>
       <CompileAs>Default</CompileAs>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <DebugInformationFormat>None</DebugInformationFormat>
@@ -182,7 +224,7 @@
       <LanguageStandard_C>stdc17</LanguageStandard_C>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <PrecompiledHeaderOutputFile />
-      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14  -Wno-clang-analyzer-valist.Uninitialized %(AdditionalOptions)</AdditionalOptions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <CompileAs>Default</CompileAs>
       <LanguageStandard>stdcpp17</LanguageStandard>
@@ -208,7 +250,7 @@
       <LanguageStandard_C>stdc17</LanguageStandard_C>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <PrecompiledHeaderOutputFile />
-      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14  -Wno-clang-analyzer-valist.Uninitialized %(AdditionalOptions)</AdditionalOptions>
       <CompileAs>Default</CompileAs>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <DebugInformationFormat>None</DebugInformationFormat>
@@ -235,7 +277,7 @@
       <LanguageStandard_C>stdc17</LanguageStandard_C>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <PrecompiledHeaderOutputFile />
-      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Zc:twoPhase- /MP -fms-compatibility-version=14  -Wno-clang-analyzer-valist.Uninitialized %(AdditionalOptions)</AdditionalOptions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <CompileAs>Default</CompileAs>
       <LanguageStandard>stdcpp17</LanguageStandard>
@@ -252,4 +294,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/src/base/std.h b/src/base/std.h
index bc45b55..9f6b7d9 100644
--- a/src/base/std.h
+++ b/src/base/std.h
@@ -67,7 +67,7 @@ typedef uint8 bool;
 #endif
 
 #ifndef sprintf_s
-    #define sprintf_s(BUF, BUFSIZE, FORMAT, ...) sprintf(BUF, FORMAT, ## __VA_ARGS__)
+    //#define sprintf_s(BUF, BUFSIZE, FORMAT, ...) sprintf(BUF, FORMAT, ## __VA_ARGS__)
 #endif
 
 
diff --git a/src/base/type_system/base_toString.c b/src/base/type_system/base_toString.c
index 0e33986..68c5324 100644
--- a/src/base/type_system/base_toString.c
+++ b/src/base/type_system/base_toString.c
@@ -67,7 +67,10 @@ char* toString_uint(uint64 n, bool withPostfix, bool uppercase){
         throw("too big precision");\
     if(precision==0)\
         precision=toString_float_default_precision;\
-    int cn=sprintf(str, "%.*f", precision, n);\
+    int cn=IFMSC(\
+        sprintf_s(str, bufsize, "%.*f", precision, n),\
+        sprintf(str, "%.*f", precision, n)\
+    );\
     /* remove trailing zeroes except .0*/\
     while(str[cn-1]=='0' && str[cn-2]!='.')\
         cn--;\
diff --git a/src/kprint/kprintf.c b/src/kprint/kprintf.c
index baba98e..261c649 100644
--- a/src/kprint/kprintf.c
+++ b/src/kprint/kprintf.c
@@ -133,7 +133,7 @@ void kprintf(const char* format, ...){
             putc(c,stdout);
         }
         #if defined(_WIN64) || defined(_WIN32)
-        end_iteration:
+        end_iteration:;
         #endif
     }
     va_end(vl);