Refine `mrb_alloca()`
* The allocated memory is guaranteed to be aligned for any data type (it was
not guaranteed when string type is embed).
* Make allocation size exactly specified size (does not allocate space for a
null byte).
@@ -280,8 +280,9 @@ mrb_free(mrb_state *mrb, void *p)
MRB_API void*
mrb_alloca(mrb_state *mrb, size_t size)
{
- mrb_value str = mrb_str_new(mrb, NULL, size);
- return RSTRING_PTR(str);
+ struct RString *s;
+ s = (struct RString*)mrb_obj_alloc(mrb, MRB_TT_STRING, mrb->string_class);
+ return s->as.heap.ptr = (char*)mrb_malloc(mrb, size);
}
static mrb_bool
