Issue #7299 has been reported by marcandre (Marc-Andre Lafortune).

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Feature #7299: Ruby should not completely ignore blocks.
https://bugs.ruby-lang.org/issues/7299

Author: marcandre (Marc-Andre Lafortune)
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 


Ruby should not completely ignore blocks.

  const_set :Example, Class.new do
    p "Hello, world"
  end
  # Doesn't print anything, generate any warning nor error.

To minimize any impact, Ruby should issue a warning, and in future version could even raise an error.

Even unused variables provide warnings in verbose mode, and they have their use.

I can't think of a case where passing a block to a builtin method that doesn't accept a block is not a programming error though.

If this is approved, I volunteer to implement this.



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