If a dynamic symbol has been converted to a static symbol, it gets added
to the global ID list and should no longer move. C extensions can pass
symbols to rb_sym2id and those symbols should no longer be movable.
When the symbol is passed to rb_sym2id, the id member is set, so we
can use its existence to prevent movement.
Added by tenderlovemaking (Aaron Patterson) almost 5 years ago
Prevent Dynamic -> Static symbols from moving
If a dynamic symbol has been converted to a static symbol, it gets added
to the global ID list and should no longer move. C extensions can pass
symbols to rb_sym2id and those symbols should no longer be movable.
When the symbol is passed to rb_sym2id, the
idmember is set, so wecan use its existence to prevent movement.