tree 61adb1f332bbd8c0c0365b81cef8de47fa2ea06a
parent 35b4efc270db2418bc2cac6671575a45028061c3
author Roberto Ierusalimschy <roberto@inf.puc-rio.br> 1564580631 -0300
committer Roberto Ierusalimschy <roberto@inf.puc-rio.br> 1564580631 -0300

To-be-closed variables must be closed on initialization

When initializing a to-be-closed variable, check whether it has a
'__close' metamethod (or is a false value) and raise an error if
if it hasn't. This produces more accurate error messages. (The
check before closing still need to be done: in the C API, the value
is not constant; and the object may lose its '__close' metamethod
during the block.)