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{print STDERR "1"; "x" x 2**20} {print STDERR "2"; "x" x 2**20} {print STDERR "3"; "x" x 2**20}
$ strace -e mmap,munmap,write ./903114.pl ... ... munmap(0x7fe6d5d0e000, 1052672) = 0 munmap(0x7fe6d5e0f000, 1052672) = 0 munmap(0x7fe6d7315000, 1052672) = 0
$ perl -MO=Concise,-exec ./903114.pl ... ... 12 <$> const[IV 1048576] s 13 <2> repeat[t9] vK/2 <--- ...