From 431e4a913bcf7c37208361868b7e202a8a8f5e4d Mon Sep 17 00:00:00 2001
From: Charles Schlosser <cs.schlosser@gmail.com>
Date: Wed, 7 Feb 2024 04:52:19 +0000
Subject: [PATCH] Fix the fuzz

---
 Eigen/src/Core/MathFunctions.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index 3f5df7b41..75f8e5344 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -767,7 +767,7 @@ Scalar getRandomBits(int numRandomBits) {
     ScalarBits = sizeof(Scalar) * CHAR_BIT
   };
   eigen_assert((numRandomBits >= 0) && (numRandomBits <= ScalarBits));
-  const BitsType mask = BitsType(-1) >> (ScalarBits - numRandomBits);
+  const BitsType mask = BitsType(-1) >> ((ScalarBits - numRandomBits) & (ScalarBits - 1));
   BitsType randomBits = BitsType(0);
   for (int shift = 0; shift < numRandomBits; shift += StdRandBits) {
     int r = std::rand();