Turn class variable warnings into exceptions - #2987
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jeremyevans merged 1 commit intoApr 10, 2020
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This changes the following warnings: * warning: class variable access from toplevel * warning: class variable @foo of D is overtaken by C into RuntimeErrors. Handle defined?(@@foo) at toplevel by returning nil instead of raising an exception (the previous behavior warned before returning nil when defined? was used). Refactor the specs to avoid the warnings even in older versions. The specs were checking for the warnings, but the purpose of the related specs as evidenced from their description is to test for behavior, not for warnings. Fixes [Bug ruby#14541]
eregon
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Mar 27, 2020
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Looks good, thank you for doing this!
I forgot about this issue.
It would be useful to add new specs for the changed behavior, so other implementations also notice the semantics change and follow it.
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This changes the following warnings:
into RuntimeErrors. Handle defined?(@@foo) at toplevel
by returning nil instead of raising an exception (the previous
behavior warned before returning nil when defined? was used).
Refactor the specs to avoid the warnings even in older versions.
The specs were checking for the warnings, but the purpose of
the related specs as evidenced from their description is to
test for behavior, not for warnings.
Fixes [Bug #14541]