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-rw-r--r--variable.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/variable.c b/variable.c
index e9245050d3..91482e9d0f 100644
--- a/variable.c
+++ b/variable.c
@@ -1619,7 +1619,7 @@ rb_ivar_count(VALUE obj)
switch (BUILTIN_TYPE(obj)) {
case T_OBJECT:
if ((tbl = ROBJECT_IV_INDEX_TBL(obj)) != 0) {
- st_index_t i, count, num = tbl->num_entries;
+ st_index_t i, count, num = ROBJECT_NUMIV(obj);
const VALUE *const ivptr = ROBJECT_IVPTR(obj);
for (i = count = 0; i < num; ++i) {
if (ivptr[i] != Qundef) {