diff options
Diffstat (limited to 'vm_method.c')
| -rw-r--r-- | vm_method.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/vm_method.c b/vm_method.c index 9af240a2cc..98af316fe6 100644 --- a/vm_method.c +++ b/vm_method.c @@ -1151,7 +1151,10 @@ void rb_define_alloc_func(VALUE klass, VALUE (*func)(VALUE)) { Check_Type(klass, T_CLASS); - RCLASS_ALLOCATOR(klass) = func; + if (FL_TEST_RAW(klass, FL_SINGLETON)) { + rb_raise(rb_eTypeError, "can't define an allocator for a singleton class"); + } + RCLASS_SET_ALLOCATOR(klass, func); } void |