diff --git a/src/Array/Array.c b/src/Array/Array.c
index 2d293c2..63d1ead 100644
--- a/src/Array/Array.c
+++ b/src/Array/Array.c
@@ -17,7 +17,7 @@ Array_define(Pointer)
 Array_define(Unitype)
 
 void Array_Unitype_free_(Array_Unitype* array, bool freeMembers){
-    if(freeMembers) for (i32 i=0; i<array->length; i++)
+    if(freeMembers) for (u32 i=0; i<array->length; i++)
         Unitype_free(array->values[i]);
     if(array->allocatedOnHeap)
         free(array->values);
diff --git a/src/Autoarr/Autoarr.h b/src/Autoarr/Autoarr.h
index 405e018..45cf50c 100644
--- a/src/Autoarr/Autoarr.h
+++ b/src/Autoarr/Autoarr.h
@@ -26,12 +26,12 @@ Autoarr_declare(Unitype)
 #define Autoarr_foreach(ar,elem,codeblock)({ \
     if(ar->blocks_count>0) { \
         typeof(**ar->values) elem; \
-        for(u32 blockI=0;blockI<ar->blocks_count-1;blockI++) \
+        for(u16 blockI=0;blockI<ar->blocks_count-1;blockI++) \
             for(u32 elemI=0;elemI<ar->max_block_length;elemI++){ \
                 elem=ar->values[blockI][elemI]; \
                 (codeblock); \
             } \
-        for(u32 elemI=0;elemI<ar->block_length;elemI++){ \
+        for(u16 elemI=0;elemI<ar->block_length;elemI++){ \
             elem=ar->values[ar->blocks_count-1][elemI]; \
             (codeblock); \
         } \
diff --git a/src/DtsodParser/DtsodV24_deserialize.c b/src/DtsodParser/DtsodV24_deserialize.c
index c992909..b755579 100644
--- a/src/DtsodParser/DtsodV24_deserialize.c
+++ b/src/DtsodParser/DtsodV24_deserialize.c
@@ -272,8 +272,10 @@ Maybe __ReadValue(DeserializeSharedData* shared, bool* readingList){
         case ']':
             if(!readingList) safethrow_wrongchar(c,Unitype_free(value));
             *readingList=false;
+            goto return_value;
         case ';':
         case ',':
+            return_value:
             if(valueStr.length!=0){
                 if(!Unitype_isUniNull(value)) 
                     safethrow_wrongchar(c,Unitype_free(value));
diff --git a/src/DtsodParser/DtsodV24_serialize.c b/src/DtsodParser/DtsodV24_serialize.c
index ac0b1f9..99804a7 100644
--- a/src/DtsodParser/DtsodV24_serialize.c
+++ b/src/DtsodParser/DtsodV24_serialize.c
@@ -77,7 +77,7 @@ Maybe __AppendValue(SerializeSharedData* shared, Unitype u){
         bool hashtableNotBlank=false;
         Hashtable_foreach(((Hashtable*)u.VoidPtr), __, ({
             hashtableNotBlank=true;
-            if(__.key); // weird way to disable warning
+            if(__.key) {} // weird way to disable warning
             break;
         }));
         
diff --git a/src/Filesystem/file.c b/src/Filesystem/file.c
index d6dfb7c..5c38523 100644
--- a/src/Filesystem/file.c
+++ b/src/Filesystem/file.c
@@ -2,7 +2,9 @@
 #include "../String/StringBuilder.h"
 #include "io_includes.h"
 
-kt_define(FileHandle, (freeMembers_t)file_close, NULL)
+void __file_freeMembers(void* _f){ fclose((FileHandle)_f); }
+
+kt_define(FileHandle, __file_freeMembers, NULL)
 
 bool file_exists(const char* path){
     if(path[0]=='.'){
diff --git a/src/Filesystem/path.c b/src/Filesystem/path.c
index ef977ce..cc5cb6e 100644
--- a/src/Filesystem/path.c
+++ b/src/Filesystem/path.c
@@ -1,6 +1,6 @@
 #include "filesystem.h"
 
-char* __path_concat(u16 n, ...){
+char* __path_concat(u32 n, ...){
     char** parts=(char**)malloc(n*sizeof(char*));
     u32* lengths=malloc(n*sizeof(u32));
     u32 totalLength=0;
@@ -56,9 +56,9 @@ Maybe path_throwIfEscapes(const char* path){
 
 char* path_parentDir(char* dir){
     char* copy=cptr_copy(dir);
-    u32 length=cptr_length(copy);
+    i32 length=cptr_length(copy);
     i32 i=cptr_lastIndexOfChar(copy,path_sep);
-    if(i==length-1){
+    if(i!=-1 && i==length-1){
         copy[length-1]=0;
         i=cptr_lastIndexOfChar(copy,path_sep);
     }
diff --git a/src/Filesystem/path.h b/src/Filesystem/path.h
index 29571aa..65e0f31 100644
--- a/src/Filesystem/path.h
+++ b/src/Filesystem/path.h
@@ -14,7 +14,7 @@ static const char path_sep='/';
 static const char path_notSep='\\';
 #endif
 
-char* __path_concat(u16 n, ...);
+char* __path_concat(u32 n, ...);
 /// @brief merges path parts together and puts <path_sep> between them
 /// @return new cstr
 #define path_concat(PATH_PARTS...) __path_concat(count_args(PATH_PARTS), PATH_PARTS)
diff --git a/src/base/cptr.c b/src/base/cptr.c
index d2b07be..ecf4eb4 100644
--- a/src/base/cptr.c
+++ b/src/base/cptr.c
@@ -50,7 +50,7 @@ bool cptr_endsWith(char* ptr, char* fragment){
 
 u32 cptr_indexOf(char* ptr, char* fragment){
     char sc=*ptr;
-    for(i32 si=0, fi=0; sc!=0; si++){
+    for(u32 si=0, fi=0; sc!='\0'; si++){
         sc=ptr[si];
         if(sc==fragment[fi]){
             fi++;
@@ -63,7 +63,7 @@ u32 cptr_indexOf(char* ptr, char* fragment){
 }
 u32 cptr_indexOfChar(char* ptr, char fragment){
     char sc=*ptr;
-    for(i32 si=0; sc!=0; si++){
+    for(u32 si=0; sc!='\0'; si++){
         sc=ptr[si];
         if(sc==fragment){
             return si;
@@ -73,7 +73,7 @@ u32 cptr_indexOfChar(char* ptr, char fragment){
 }
 u32 cptr_lastIndexOf(char* ptr, char* fragment){
     char sc=*ptr;
-    i32 fi_last=cptr_length(fragment)-1;
+    u32 fi_last=cptr_length(fragment)-1;
     for(i32 si=cptr_length(ptr)-1, fi=fi_last; si>=0; si--){
         sc=ptr[si];
         if(sc==fragment[fi]){
@@ -103,7 +103,7 @@ void memcopy(void* from, void* to, u32 size){
         ((char*)to)[i]=((char*)from)[i];
 }
 
-char* __cptr_concat(u16 n, ...){
+char* __cptr_concat(u32 n, ...){
     char** strs=(char**)malloc(n*sizeof(char*));
     u32* lengths=malloc(n*sizeof(u32));
     u32 totalLength=0;
diff --git a/src/base/cptr.h b/src/base/cptr.h
index 55b087c..fbd6dd8 100644
--- a/src/base/cptr.h
+++ b/src/base/cptr.h
@@ -44,7 +44,7 @@ static inline bool cptr_contains(char* ptr, char* fragment){
 
 void memcopy(void* from, void* to, u32 size);
 
-char* __cptr_concat(u16 n, ...);
+char* __cptr_concat(u32 n, ...);
 #define cptr_concat(STR...) __cptr_concat(count_args(STR), STR)
 
 #if __cplusplus
diff --git a/src/base/std.h b/src/base/std.h
index 14e85c0..4e5bda9 100644
--- a/src/base/std.h
+++ b/src/base/std.h
@@ -116,8 +116,9 @@ You can even embed it into macro in header (see kprint.h)
     #define PRAGMA_WARNING_DISABLE(wName) _PRAGMA(GCC diagnostic ignored wName)
     #define PRAGMA_WARNING_POP  _PRAGMA(GCC diagnostic pop)
     #define W_INT_CONVERSION "-Wint-conversion"
+    #define W_IMPLICIT_FALLTHROUGH "-Wimplicit-fallthrough"
 #endif
-#define WARNING_DISABLE(WARNING, CODE) \
+#define WARNING_DISABLE(WARNING, CODE...) \
     PRAGMA_WARNING_PUSH \
     PRAGMA_WARNING_DISABLE(WARNING) \
     CODE; \
diff --git a/src/base/type_system/base_toString.c b/src/base/type_system/base_toString.c
index 2fc2371..b63d82d 100644
--- a/src/base/type_system/base_toString.c
+++ b/src/base/type_system/base_toString.c
@@ -113,7 +113,7 @@ char* toString_bin(void* _bytes, u32 size, bool inverse, bool withPrefix){
         for(i32 bn=size-1; bn>=0; bn--)
             byte_to_bits(bytes[bn])
     } else {
-        for(i32 bn=0; bn<size; bn++)
+        for(u32 bn=0; bn<size; bn++)
             byte_to_bits(bytes[bn])
     }
     str[cn]=0;
@@ -155,7 +155,7 @@ char* toString_hex(void* _bytes, u32 size, bool inverse, bool withPrefix, bool u
     }
     // right to left
     else {
-        for(i32 bn=0; bn<size; bn++){ // byte number
+        for(u32 bn=0; bn<size; bn++){ // byte number
             unsigned char byte=bytes[bn];
             str[cn++]=_4bitsHex(byte/16, uppercase);
             str[cn++]=_4bitsHex(byte%16, uppercase);
diff --git a/src/kprint/kprintf.c b/src/kprint/kprintf.c
index 80c299c..81a9c29 100644
--- a/src/kprint/kprintf.c
+++ b/src/kprint/kprintf.c
@@ -124,7 +124,7 @@ void kprintf(const char* format, ...){
                                 case '5': case '6': case '7': case '8': case '9':
                                     colorUnix=colorUnix*10+c-'0';
                                     break;
-                                case 'm':
+                                case 'm': ;
                                     WORD colorWin=unixColorToWin(colorUnix);
                                     HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
                                     SetConsoleTextAttribute(hConsole, colorWin);