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Always skip dummy head of subclass in rb_prepend_module

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The first node of the subclass linked list of always a dummy head, so it
should be skipped.
This commit is contained in:
Peter Zhu 2022-03-16 15:10:11 -04:00
parent 6d8f396f37
commit 819f4f0e65
1 changed files with 1 additions and 1 deletions
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2
class.c
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@ -1353,7 +1353,7 @@ rb_prepend_module(VALUE klass, VALUE module)
if (RB_TYPE_P(klass, T_MODULE)) { if (RB_TYPE_P(klass, T_MODULE)) {
rb_subclass_entry_t *iclass = RCLASS_SUBCLASSES(klass); rb_subclass_entry_t *iclass = RCLASS_SUBCLASSES(klass);
// skip the placeholder subclass entry at the head of the list if it exists // skip the placeholder subclass entry at the head of the list if it exists
if (iclass && iclass->next) { if (iclass) {
RUBY_ASSERT(!iclass->klass); RUBY_ASSERT(!iclass->klass);
iclass = iclass->next; iclass = iclass->next;
} }