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Need to update ci variable after re-entry to VM - #6427
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Some functions called by `mrb_vm_exec()` involve re-entry into the mruby VM. If the `ci` variable is not updated after re-entry, use-after-free is caused. This patch makes the following after-call fixes. | called | might call methods | ----------------------- | ---------------- | `mrb_ary_splat()` | `#to_a` | `hash_new_from_regs()` | `#eql?` `#hash` | `mrb_hash_delete_key()` | `#eql?` `#hash` | `mrb_hash_get()` | `#eql?` `#hash` `#default` | `mrb_hash_key_p()` | `#eql?` `#hash` | `mrb_hash_merge()` | `#eql?` `#hash` | `mrb_hash_set()` | `#eql?` `#hash` | `mrb_range_new()` | `#<=>`
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Some functions called by
mrb_vm_exec()involve re-entry into the mruby VM. If thecivariable is not updated after re-entry, use-after-free is caused.This patch makes the following after-call fixes.
mrb_ary_splat()#to_ahash_new_from_regs()#eql?#hashmrb_hash_delete_key()#eql?#hashmrb_hash_get()#eql?#hash#defaultmrb_hash_key_p()#eql?#hashmrb_hash_merge()#eql?#hashmrb_hash_set()#eql?#hashmrb_range_new()#<=>