diff options
| author | Peter Zhu <[email protected]> | 2024-07-16 15:38:48 -0400 |
|---|---|---|
| committer | Peter Zhu <[email protected]> | 2024-07-17 09:01:42 -0400 |
| commit | 403f44ec2c5047367271f5ec7a07b0460631321b (patch) | |
| tree | 36a3bf29bbb1b8fa539ed11499e0d44354b3d45a | |
| parent | 690ea013cac2d3c4eb149c8e7e5d794dfe874abe (diff) | |
Make OBJ_ID_INCREMENT == RUBY_IMMEDIATE_MASK + 1
All the non-GC objects (i.e. immediates) have addresses such that
`obj % RUBY_IMMEDIATE_MASK != 0` (except for `Qfalse`, which is 0). We
can define `OBJ_ID_INCREMENT` as `RUBY_IMMEDIATE_MASK + 1` which should
guarantee that GC objects never have conflicting object IDs with
immediates.
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/11178
| -rw-r--r-- | gc/default.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gc/default.c b/gc/default.c index 67f1c7dde2..560da7388b 100644 --- a/gc/default.c +++ b/gc/default.c @@ -1629,7 +1629,7 @@ object_id_hash(st_data_t n) return FIX2LONG(rb_hash((VALUE)n)); } -#define OBJ_ID_INCREMENT (BASE_SLOT_SIZE) +#define OBJ_ID_INCREMENT (RUBY_IMMEDIATE_MASK + 1) #define OBJ_ID_INITIAL (OBJ_ID_INCREMENT) static const struct st_hash_type object_id_hash_type = { |