Stage arena is not a sub

compiler.h

@@ -242,8 +242,8 @@ parse_init(Parse_Ctx *ctx, Allocator *perm_allocator, Allocator *heap_allocator)
   ctx->ordered_decls        = {ctx->heap};
   ctx->type_map             = {ctx->heap};
   ctx->modules              = {ctx->heap};
-  ctx->stage_arena          = arena_sub(perm_allocator, mib(4), "Compiler stage arena"_s);
   bigint_allocator          = ctx->perm;
+  arena_init(&ctx->stage_arena, "Compiler stage arena"_s);
 
   lex_init(ctx->perm, ctx->heap, ctx);
   ctx->builtins = ast_module(ctx->intern("builtins"_s));

main.cpp

@@ -176,10 +176,14 @@ int main(int argument_count, char **arguments){
 
   F64 total_time = os_time();
   begin_compilation();
+  
   Ast_Module *module = add_module(pctx->intern(program_name));
   parse_all_modules();
   assert(module);
   resolve_everything_in_module(module);
+
+
+  arena_clear(&pctx->stage_arena);
   String result = get_compilation_result();
   assert(os_write_file("program.c"_s, result));
   {

programs/main.kl

@@ -69,9 +69,6 @@ WinMain :: (hInstance: HINSTANCE, hPrevInstance: HINSTANCE, lpCmdLine: LPSTR, nS
   }
   assert(RegisterClassW(&w) != 0)
 
-  buff: *char = allocate(100)
-  thing: int = buff
-
   screen_size: Vec2I = {1280, 720}
   window := CreateWindowExW(
     dwExStyle = 0, hWndParent = 0, hMenu = 0, lpParam = 0,