In Java and C++ (or at least Sun CC with +w) its an error to define the same variable at a narrower scope than an existing definition. 
eg bad.c
{
   int a=1;
   {
       int a=1;
   }    
}

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eg CC +w bad.c "c.c", line 7: Warning: i hides the same name in an outer scope.

If I have the below in perl how do I persuade perl to reject this as I can for C++ and Java ? 

my $var=1;
{ 
   my $var=1;
}

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Is there a cpan module that supports this if its not possible in the core tool.

Even warnings and strict turned on don't seem to help.

In reply to Prohibiting redeclaration of lexicals in inner scope by JohnLon

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