From a65ac2d6fa4e7381d88b79a2881f7c05daa903c3 Mon Sep 17 00:00:00 2001 From: Peter Zhu Date: Mon, 13 Sep 2021 09:19:10 -0400 Subject: Don't overwrite free_slots count during sweeping gc_compact_finish may invalidate pages, which may move objects from this page to other pages, which updates the free_slots of this page. --- gc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'gc.c') diff --git a/gc.c b/gc.c index 47762c2bfc..639feac4e3 100644 --- a/gc.c +++ b/gc.c @@ -5414,6 +5414,7 @@ gc_page_sweep(rb_objspace_t *objspace, rb_size_pool_t *size_pool, rb_heap_t *hea } sweep_page->flags.before_sweep = FALSE; + sweep_page->free_slots = 0; p = sweep_page->start; bits = sweep_page->mark_bits; @@ -5462,7 +5463,7 @@ gc_page_sweep(rb_objspace_t *objspace, rb_size_pool_t *size_pool, rb_heap_t *hea sweep_page->total_slots, ctx->freed_slots, ctx->empty_slots, ctx->final_slots); - sweep_page->free_slots = ctx->freed_slots + ctx->empty_slots; + sweep_page->free_slots += ctx->freed_slots + ctx->empty_slots; objspace->profile.total_freed_objects += ctx->freed_slots; if (heap_pages_deferred_final && !finalizing) { -- cgit v1.2.3