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-rw-r--r--src/aig/ioa/ioaWriteAig.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/aig/ioa/ioaWriteAig.c b/src/aig/ioa/ioaWriteAig.c
index 74462bbd..a6c23fd4 100644
--- a/src/aig/ioa/ioaWriteAig.c
+++ b/src/aig/ioa/ioaWriteAig.c
@@ -249,7 +249,8 @@ void Ioa_WriteAiger( Aig_Man_t * pMan, char * pFileName, int fWriteSymbols )
*/
// write the comment
fprintf( pFile, "c\n" );
- fprintf( pFile, "%s\n", pMan->pName );
+ if ( pMan->pName )
+ fprintf( pFile, ".model %s\n", pMan->pName );
fprintf( pFile, "This file was produced by the AIG package in ABC on %s\n", Ioa_TimeStamp() );
fprintf( pFile, "For information about AIGER format, refer to %s\n", "http://fmv.jku.at/aiger" );
fclose( pFile );