Parsing complete mostly, ordering, resolving, C++ tests

os_win32.c

@@ -10,7 +10,7 @@ os_read_file(Arena *arena, String name){
   result.len = ftell(f);
   fseek(f, 0, SEEK_SET);
   
-  result.str = arena_push_size(arena, result.len + 1);
+  result.str = (U8 *)arena_push_size(arena, result.len + 1);
   fread(result.str, result.len, 1, f);
   fclose(f);
   
@@ -18,6 +18,22 @@ os_read_file(Arena *arena, String name){
   return result;
 }
 
+function SizeU
+get_align_offset(SizeU size, SizeU align){
+  SizeU mask = align - 1;
+  SizeU val = size & mask;
+  if(val){
+    val = align - val;
+  }
+  return val;
+}
+
+function SizeU
+align_up(SizeU size, SizeU align){
+  SizeU result = size + get_align_offset(size, align);
+  return result;
+}
+
 function OS_Memory
 os_reserve(SizeU size){
   OS_Memory result = {0};