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Do not dereference and write through a null pointer during loop invariant removal.

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This commit is contained in:
Stephen Heumann 2019-12-22 19:58:57 -06:00
parent 095060ca70
commit 2fb075ce58
1 changed files with 2 additions and 1 deletions

3
DAG.pas

@ -3255,7 +3255,8 @@ var
new(dp);
dp^.last := nil;
dp^.next := dom;
dom^.last := dp;
if dom <> nil then
dom^.last := dp;
dom := dp;
dp^.dfn := dfn;
end; {AddDominator}