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Add assertion for RCLASS_SET_PRIME_CLASSEXT_WRITABLE

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When classes are booted, they should all be writeable unless namespaces
are enabled.  This commit adds an assertion to ensure that classes are
writable.
This commit is contained in:
Aaron Patterson 2025-05-20 10:15:22 -07:00 committed by Aaron Patterson
parent 511b6bcb53
commit 6ea893f376
Notes: git 2025-05-21 16:51:46 +00:00 
Merged: https://github.com/ruby/ruby/pull/13385
2 changed files with 6 additions and 2 deletions
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4
class.c
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@ -702,7 +702,7 @@ class_alloc(VALUE flags, VALUE klass)
RCLASS_PRIME_NS((VALUE)obj) = ns;
// Classes/Modules defined in user namespaces are
// writable directly because it exists only in a namespace.
RCLASS_SET_PRIME_CLASSEXT_WRITABLE((VALUE)obj, NAMESPACE_USER_P(ns) ? true : false);
RCLASS_SET_PRIME_CLASSEXT_WRITABLE((VALUE)obj, (NAMESPACE_USER_P(ns) || !rb_namespace_available()) ? true : false);
RCLASS_SET_ORIGIN((VALUE)obj, (VALUE)obj);
RCLASS_SET_REFINED_CLASS((VALUE)obj, Qnil);
@ -858,6 +858,8 @@ rb_class_new(VALUE super)
RCLASS_SET_MAX_IV_COUNT(klass, RCLASS_MAX_IV_COUNT(super));
}
RUBY_ASSERT(getenv("RUBY_NAMESPACE") || RCLASS_PRIME_CLASSEXT_WRITABLE_P(klass));
return klass;
}

4
gc.c
View File

@ -3279,12 +3279,14 @@ rb_gc_mark_children(void *objspace, VALUE obj)
// Skip updating max_iv_count if the prime classext is not writable
// because GC context doesn't provide information about namespaces.
if (RCLASS_PRIME_CLASSEXT_WRITABLE_P(klass)) {
VM_ASSERT(rb_shape_obj_too_complex_p(klass));
// Increment max_iv_count if applicable, used to determine size pool allocation
if (RCLASS_MAX_IV_COUNT(klass) < fields_count) {
RCLASS_SET_MAX_IV_COUNT(klass, fields_count);
}
}
else {
VM_ASSERT(rb_shape_obj_too_complex_p(klass));
}
}
break;