Ruby » Ruby master

Bug #12402

Updated by nobu (Nobuyoshi Nakada) over 8 years ago

In this example l'm intentionally passing bad data to `Date.parse` to trigger an exception. Depending on whether I use parenthesis in the method call, and whether I assign the result, I get different behavior for the inline rescue. 

 Code: 

 ~~~ruby ~~~ 
 var1 = "apple" 
 var1 = Date.parse var1 rescue nil 

 var2 = "apple" 
 var2 = Date.parse(var2) rescue nil 

 def example1(bar) 
   Date.parse bar rescue nil 
 end 

 def example2(bar) 
   bar = Date.parse bar rescue nil 
   bar 
 end 

 def example3(bar) 
   bar = Date.parse(bar) rescue nil 
   bar 
 end 

 puts "Variable 1: #{var1.nil?}" 
 puts "Variable 2: #{var2.nil?}" 
 puts "Example method 1: #{example1("apple").nil?}" 
 puts "Example method 2: #{example2("apple").nil?}" 
 puts "Example method 3: #{example3("apple").nil?}" 
 ~~~ 

 I would expect all 5 outputs from the above script to return true. 

 Example: 

 ``` 
 Variable 1: false 
 Variable 2: true 
 Example method 1: true 
 Example method 2: false 
 Example method 3: true 
 ```

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