balls are moving on my screen

src/util.cpp

@@ -10,7 +10,7 @@ array<char*> _split_str_inner(const char* s, char delim, bool just_check_ws);
 
 template<class T> void append(array<T>& a, T el) {
     if (a.len == a.cap) {
-        resize(a, a.cap * 2);
+        resize(a, max(8, a.cap * 2));
     }
     a[a.len] = el;
     a.len++;
@@ -23,20 +23,18 @@ template<class T> T pop(array<T>& a) {
 }
 
 template<class T> void resize(array<T>& a, size_t new_cap) {
-    T* new_data = (T*)malloc(new_cap);
+    T* new_data = (T*)malloc(sizeof(T) * new_cap);
     if (a.len > 0) {
         memcpy(new_data, a.data, min(a.len, new_cap));
     }
     free(a.data);
+    a.data = new_data;
     a.len = min(a.len, new_cap);
     a.cap = new_cap;
 }
 
-template<class T> void free(array<T>& a) {
-    if (a.len > 0)
-        free(a.data);
+template<class T> void clear(array<T>& a) {
     a.len = 0;
-    a.cap = 0;
 }
 
 bool read_file(array<char>* out, const char* filepath) {
@@ -76,7 +74,7 @@ array<char*> _split_str_inner(const char* s, char delim, bool just_check_ws) {
             memcpy(word, cur_word.data, cur_word.len);
             word[cur_word.len] = '\0';
             append(res, word);
-            free(cur_word);
+            clear(cur_word);
             if (c == '\0') {
                 break;
             }
@@ -89,6 +87,5 @@ array<char*> _split_str_inner(const char* s, char delim, bool just_check_ws) {
             break;
         }
     }
-    free(cur_word);
     return res;
 }