allocator: "padding" field for alloc_metadata_t, static_assert on sizeof

2026-03-05 22:20:10 +00:00
parent 55ed8c5939
commit 8231cf4e14
1 changed files with 5 additions and 1 deletions
--- a/include/alisp/allocator.h
+++ b/include/alisp/allocator.h
@@ -15,10 +15,14 @@

 typedef struct
 {
+  u64 padding : 56;
+  tag_t tag   : 8;
  u64 references;
-  tag_t tag : 8;
 } alloc_metadata_t;

+static_assert(sizeof(alloc_metadata_t) == 16,
+              "16 byte metadata required for alignment purposes");
+
 typedef struct
 {
  alloc_metadata_t metadata;