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authorAlan Mishchenko <alanmi@berkeley.edu>2011-11-08 11:36:35 -0800
committerAlan Mishchenko <alanmi@berkeley.edu>2011-11-08 11:36:35 -0800
commit55e9c4d0faebbaae551618e95a77f60b9648a257 (patch)
tree54f8b3cbddf8aceb72bae10275c1de32372333d4
parent9a89e3f9f5ead585370edc62e037d38dd3d3ff8f (diff)
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Corner case bug in deriving truth table from SOP.
-rw-r--r--src/base/abc/abcSop.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/base/abc/abcSop.c b/src/base/abc/abcSop.c
index 2b66fc77..297b0737 100644
--- a/src/base/abc/abcSop.c
+++ b/src/base/abc/abcSop.c
@@ -954,7 +954,7 @@ char * Abc_SopFromTruthHex( char * pTruth )
// get the number of variables
nTruthSize = strlen(pTruth);
- nVars = Extra_Base2Log( nTruthSize ) + 2;
+ nVars = (nTruthSize < 2) ? 2 : Extra_Base2Log(nTruthSize) + 2;
if ( nTruthSize != (1 << (nVars-2)) )
{
printf( "String %s does not look like a truth table of a %d-variable function.\n", pTruth, nVars );