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disallow phi nodes in the start block

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AFL found this bug.
This commit is contained in:
Quentin Carbonneaux 2016-04-20 14:03:38 -04:00
parent 84bb28c042
commit bbf90069b3
1 changed files with 1 additions and 1 deletions
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2
parse.c
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@ -578,7 +578,7 @@ parseline(PState ps)
op = next();
DoOp:
if (op == Tphi) {
if (ps != PPhi)
if (ps != PPhi || curb == curf->start)
err("unexpected phi instruction");
op = -1;
}