Shrewd brainfuckers will have noticed that the aforegiven artistry has seemingly run afoul with recent perl incarnations. Versions 5.20+ exhibit severe indigestion upon encountering this following construct:
$ perl5.20.2 -e '/(?{ ++vec($x,0,1) })/'
Segmentation fault
But worry not, my brethren, for the remedy is at hand. Leveraging the remarkable prowess of a technology known as Inline::C, we are proud to have solutioned the next generation, industrial-grade tooling that is bound to meet, if not exceed, the demands of the hardcore brainfucker elite. Here it is, for your perusal, for your enjoyment:
#! /usr/bin/perl
use Inline C => Config => CC => 'clang';
use Digest::SHA q(sha1_hex);
open(CODE, '>', \my $code);
my $ind = 0;
sub o { print CODE " " x $ind, @_, "\n" }
sub br { o 'while(*d) {'; ++$ind }
sub be { --$ind; o '}' }
sub pre { o << ''; ++$ind }
#include <stdio.h>
static void ich(unsigned char *d) { int c = getc(stdin); c < 0 || (*d
+= c); }
static void och(unsigned char *d) { putc(*d, stdout); }
static unsigned char data[30000];
void run() {
unsigned char *d = data;
undef $/;
<> =~ m{
\A (?{pre})
((?: [>] (?{o '++d;'}) | [+] (?{o '++*d;'}) | [.] (?{o 'och(d);'}) |
[<] (?{o '--d;'}) | [-] (?{o '--*d;'}) | [,] (?{o 'ich(d);'}) |
[[] (?{br}) (?1) []] (?{be}) | [^][<>.,+-]
)*+)
\z (?{be}) }x or die "Alzheimer";
Inline->bind(C => $code, NAME => '_'.sha1_hex($code)); run();
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