I cringe at "local ... if ...;". It looks too much like illegal "my ... if ...;" for my taste. Alternative: 

$YAML::UseCode if 0;  # Silence spurious warning.
local $YAML::UseCode = 1;

[download]

I filed a bug report.

In reply to Re^4: code reference in YAML by ikegami
in thread code reference in YAML by Anonymous Monk

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