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  1. or download this
    5.13.4+
    5.14.0+
    
  2. or download this
    perl -E"$x=x; $x x= 100e6; <>; $r = \substr $x, 50e6; <>; ord $$r; <>"
    
    AP 5.12.4 32-bit           99M                       148M         148M
    AP 5.14.0 32-bit           99M                        99M         148M
    AP 5.14.2 32-bit           99M                        99M         148M
    
  3. or download this
    >\progs\perl5142-ap1402\bin\perl -MDevel::Peek -E"$x=chr(0); $x x= 100
    +; Dump substr $x, 50;"
    SV = PVLV(0x4de51c) at 0x497b04
    ...
        PV = 0x4b36cc "\0\0\0...\0\0\0"\0
        CUR = 100
        LEN = 104
    
  4. or download this
    >\progs\perl5124-ap1205\bin\perl -MDevel::Peek -E"$x=chr(0); $x x= 100
    +; Dump substr $x, 50;"
    SV = PVLV(0x319e4c) at 0x3bf54
    ...
        PV = 0x330f6c "\0\0\0...\0\0\0"\0
        CUR = 100
        LEN = 104