string_copy adds trailing zero byte

src/String/string.c

@@ -14,14 +14,16 @@ char* string_extract(string str){
     return cptr;
 }
 
-// copies src.ptr content to new string
+// copies src.ptr content to new string and adds \0 at the end
 string string_copy(string src){
-    if(!src.ptr) return src;
+    if(!src.ptr)
+        return src;
     string nstr;
     nstr.length=src.length;
-    nstr.ptr=malloc(nstr.length);
+    nstr.ptr=malloc(nstr.length+1);
     for(u32 i=0;i<nstr.length;i++)
         nstr.ptr[i]=src.ptr[i];
+    nstr.ptr[nstr.length]='\0';
     return nstr;
 }
 

src/String/string.h

@@ -20,10 +20,13 @@ Autoarr_declare(string)
 
 static const string stringNull={NULL,0};
 
+/// wraps pointer without copy
+#define string_fromCptr(CPTR) (string){ .ptr=CPTR, .length=cptr_length(CPTR) }
+
 // copies str content to new char pointer value (adding '\0' at the end)
 char* string_extract(string str);
 
-// copies src.ptr content to new string
+// copies src.ptr content to new string and adds \0 at the end
 string string_copy(string src);
 
 // compares two strings, NullPtr-friendly