I think you misunderstand what pack tells you. Look. The pack templates are: 

i - native C int
l - always 32 bits (nicknamed "long")
l! - native C long

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The native long is always at least as large as the native int. The native int could potentially be larger then 32 bits. On typical systems, however, an int is 32 bits long and long is either 32 or 64 bits.

In reply to Re^3: Perl and 64-bit compilers by ambrus
in thread Perl and 64-bit compilers by syphilis

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