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-rw-r--r--include/llvm/ADT/APInt.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/llvm/ADT/APInt.h b/include/llvm/ADT/APInt.h
index e67e032ace..2e623a1e0d 100644
--- a/include/llvm/ADT/APInt.h
+++ b/include/llvm/ADT/APInt.h
@@ -1191,7 +1191,8 @@ public:
/// APInt. This is used in conjunction with getActiveData to extract the raw
/// value of the APInt.
unsigned getActiveWords() const {
- return whichWord(getActiveBits()-1) + 1;
+ unsigned numActiveBits = getActiveBits();
+ return numActiveBits ? whichWord(numActiveBits - 1) + 1 : 1;
}
/// Computes the minimum bit width for this APInt while considering it to be