Fair enough. However, the sub is called with inherited @_ and it happens to work.

Same thing with map: 

  sub foo { map { print $_[$_] } 0 .. $#_ }

[download]
Can I not rely on this behavior?

Update. example code: 

use List::Util 'reduce';
sub minindex { reduce { $_[$a] < $_[$b] ? $a : $b } 0 .. $#_ }

my @g = (55, 88, 33, 6, 234, 234, 52, 6, 1324, 22, 1234);

print minindex @g;              # $g[7] == 6

[download]
This is perl 5, version 12, subversion 3 (v5.12.3) built for x86_64-linux-thread-multi
List::Util $VERSION = "1.22";

Update2. One final observation:
I also see coderef passed to the sub when run under debugger. But not when run normally.

In reply to Re^7: index of the minimum element of the array by oiskuu
in thread index of the minimum element of the array by Anonymous Monk

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