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Diffstat (limited to 'src/opt/dau/dauCanon.c')
| -rw-r--r-- | src/opt/dau/dauCanon.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/opt/dau/dauCanon.c b/src/opt/dau/dauCanon.c index 918c7ce1..0c93cc85 100644 --- a/src/opt/dau/dauCanon.c +++ b/src/opt/dau/dauCanon.c @@ -1230,6 +1230,13 @@ unsigned Abc_TtCanonicizeHie( Abc_TtHieMan_t * p, word * pTruthInit, int nVars, int i, k; assert( nVars <= 16 ); + // handle constant + if ( nVars == 0 ) + { + Abc_TtClear( pTruthInit, nWords ); + return 0; + } + Abc_TtCopy( pTruth, pTruthInit, nWords, 0 ); for ( i = 0; i < nVars; i++ ) |