src/test/run-make/graphviz-flowgraph/f12.dot-expected.dot

digraph block {
    N0[label="entry"];
    N1[label="exit"];
    N2[label="expr 12"];
    N3[label="local mut x"];
    N4[label="stmt let mut x = 12;"];
    N5[label="(dummy_node)"];
    N6[label="expr loop  { x -= 1; if x == 2 { break ; \"unreachable\"; } }"];
    N7[label="expr 1"];
    N8[label="expr x"];
    N9[label="expr x -= 1"];
    N10[label="stmt x -= 1;"];
    N11[label="expr x"];
    N12[label="expr 2"];
    N13[label="expr x == 2"];
    N14[label="expr break"];
    N15[label="(dummy_node)"];
    N16[label="stmt break ;"];
    N17[label="expr \"unreachable\""];
    N18[label="stmt \"unreachable\";"];
    N19[label="block { break ; \"unreachable\"; }"];
    N20[label="expr if x == 2 { break ; \"unreachable\"; }"];
    N21[label="block { x -= 1; if x == 2 { break ; \"unreachable\"; } }"];
    N22[label="block { let mut x = 12; loop  { x -= 1; if x == 2 { break ; \"unreachable\"; } } }"];
    N0 -> N2;
    N2 -> N3;
    N3 -> N4;
    N4 -> N5;
    N5 -> N7;
    N7 -> N8;
    N8 -> N9;
    N9 -> N10;
    N10 -> N11;
    N11 -> N12;
    N12 -> N13;
    N13 -> N14;
    N14 -> N6;
    N15 -> N16;
    N16 -> N17;
    N17 -> N18;
    N18 -> N19;
    N13 -> N20;
    N19 -> N20;
    N20 -> N21;
    N21 -> N5;
    N6 -> N22;
    N22 -> N1;
}