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-rw-r--r--src/base/abc/abcNtk.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/base/abc/abcNtk.c b/src/base/abc/abcNtk.c
index ce187f60..7d8d0f0f 100644
--- a/src/base/abc/abcNtk.c
+++ b/src/base/abc/abcNtk.c
@@ -987,7 +987,7 @@ void Abc_NtkFixNonDrivenNets( Abc_Ntk_t * pNtk )
Abc_Obj_t * pNet, * pNode;
int i;
- if ( Abc_NtkNodeNum(pNtk) == 0 )
+ if ( Abc_NtkNodeNum(pNtk) == 0 && Abc_NtkBoxNum(pNtk) == 0 )
return;
// check for non-driven nets