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Diffstat (limited to 'src/main/scala/chisel3/util')
| -rw-r--r-- | src/main/scala/chisel3/util/BitPat.scala | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/main/scala/chisel3/util/BitPat.scala b/src/main/scala/chisel3/util/BitPat.scala index 88e46e3c..985d22da 100644 --- a/src/main/scala/chisel3/util/BitPat.scala +++ b/src/main/scala/chisel3/util/BitPat.scala @@ -23,6 +23,7 @@ object BitPat { // If ? parsing is to be exposed, the return API needs further scrutiny // (especially with things like mask polarity). require(x.head == 'b', "BitPats must be in binary and be prefixed with 'b'") + require(x.length > 1, "BitPat width cannot be 0.") var bits = BigInt(0) var mask = BigInt(0) var count = 0 |