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-rw-r--r--gc.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/gc.c b/gc.c
index 530a232fd6..2f0d25b132 100644
--- a/gc.c
+++ b/gc.c
@@ -2916,9 +2916,11 @@ static void
gc_mark_maybe(rb_objspace_t *objspace, VALUE obj)
{
(void)VALGRIND_MAKE_MEM_DEFINED(&obj, sizeof(obj));
- if (is_pointer_to_heap(objspace, (void *)obj) &&
- BUILTIN_TYPE(obj) != T_ZOMBIE) {
- gc_mark(objspace, obj);
+ if (is_pointer_to_heap(objspace, (void *)obj)) {
+ int type = BUILTIN_TYPE(obj);
+ if (type != T_ZOMBIE && type != T_NONE) {
+ gc_mark(objspace, obj);
+ }
}
}
@@ -2948,17 +2950,21 @@ gc_mark_ptr(rb_objspace_t *objspace, VALUE ptr)
static int
markable_object_p(rb_objspace_t *objspace, VALUE obj)
{
- if (rb_special_const_p(obj)) return 0; /* special const not marked */
- if (RBASIC(obj)->flags == 0) return 0; /* free cell */
- if (RGENGC_CHECK_MODE && BUILTIN_TYPE(obj) == T_ZOMBIE)
- rb_bug("markable_object_p: %p is T_ZOMBIE", (void *)obj);
+ if (rb_special_const_p(obj)) return 0; /* special const is not markable */
+
+ if (RGENGC_CHECK_MODE) {
+ if (!is_pointer_to_heap(objspace, (void *)obj)) rb_bug("markable_object_p: %p is not pointer to heap", (void *)obj);
+ if (BUILTIN_TYPE(obj) == T_NONE) rb_bug("markable_object_p: %p is T_NONE", (void *)obj);
+ if (BUILTIN_TYPE(obj) == T_ZOMBIE) rb_bug("markable_object_p: %p is T_ZOMBIE", (void *)obj);
+ }
+
return 1;
}
int
rb_objspace_markable_object_p(VALUE obj)
{
- return markable_object_p(/* now it doesn't use &rb_objspace */ 0, obj);
+ return markable_object_p(&rb_objspace, obj);
}
static const char *