[ruby-core:118435] [Ruby master Bug#20597] `eval('break if false')` should raise SyntaxError but retuns nil
From:
"jeremyevans0 (Jeremy Evans) via ruby-core" <ruby-core@...>
Date:
2024-07-03 23:01:09 UTC
List:
ruby-core #118435
Issue #20597 has been updated by jeremyevans0 (Jeremy Evans).
I submitted a pull request to fix this (but prism still needs a related fix) https://github.com/ruby/ruby/pull/11099
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Bug #20597: `eval('break if false')` should raise SyntaxError but retuns nil
https://bugs.ruby-lang.org/issues/20597#change-108951
* Author: tompng (tomoya ishida)
* Status: Open
* ruby -v: ruby 3.4.0dev (2024-06-27T13:47:22Z master c6a0d03649) [x86_64-linux]
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
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These are all SyntaxError (Invalid break, compile error (SyntaxError))
~~~ruby
ruby -ce "break if false"
ruby -ce "break if (false)"
ruby -ce "break if nil"
ruby -ce "break if (nil)"
ruby -ce "break if 0>1"
~~~
But when it is passed to `eval`, some of them does not raise SyntaxError but return nil.
~~~ruby
eval('break if false') #=> nil
eval('break if (false)') #=> nil
eval('break if nil') #=> nil
eval('break if (nil)') #=> Can't escape from eval with break (SyntaxError)
eval('break if 0>1') #=> Can't escape from eval with break (SyntaxError)
~~~
Same behavior with `next` `redo` and `yield`
--
https://bugs.ruby-lang.org/
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