2d array in C is array of pointers to 1d array. So try rewrite your cycle to something like this: 
for (i=0; i<foo; i++) {
  for (j=0; j<bar; j++) {
    table[i*bar + j]++;
  }
}

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In reply to Re: Passing a bytestring from Perl to Inline::C as a 2d array by happy.barney
in thread Passing a bytestring from Perl to Inline::C as a 2d array by maasha

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