Fix clang6 failures.

Eigen/src/Core/arch/SSE/PacketMath.h

diff --git a/Eigen/src/Core/arch/SSE/PacketMath.h b/Eigen/src/Core/arch/SSE/PacketMath.h
index ce0d0ab..37f6048 100644
--- a/Eigen/src/Core/arch/SSE/PacketMath.h
+++ b/Eigen/src/Core/arch/SSE/PacketMath.h
@@ -1230,13 +1230,13 @@
 
 template <>
 EIGEN_STRONG_INLINE Packet4f pabs(const Packet4f& a) {
-  const Packet4f mask = _mm_castsi128_ps(_mm_setr_epi32(0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF));
-  return _mm_and_ps(a, mask);
+  const __m128i mask = _mm_setr_epi32(0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF);
+  return _mm_castsi128_ps(_mm_and_si128(mask, _mm_castps_si128(a)));
 }
 template <>
 EIGEN_STRONG_INLINE Packet2d pabs(const Packet2d& a) {
-  const Packet2d mask = _mm_castsi128_pd(_mm_setr_epi32(0xFFFFFFFF, 0x7FFFFFFF, 0xFFFFFFFF, 0x7FFFFFFF));
-  return _mm_and_pd(a, mask);
+  const __m128i mask = _mm_setr_epi32(0xFFFFFFFF, 0x7FFFFFFF, 0xFFFFFFFF, 0x7FFFFFFF);
+  return _mm_castsi128_pd(_mm_and_si128(mask, _mm_castpd_si128(a)));
 }
 template <>
 EIGEN_STRONG_INLINE Packet2l pabs(const Packet2l& a) {

Eigen/src/Geometry/arch/Geometry_SIMD.h

diff --git a/Eigen/src/Geometry/arch/Geometry_SIMD.h b/Eigen/src/Geometry/arch/Geometry_SIMD.h
index e8b210e..80d61d3 100644
--- a/Eigen/src/Geometry/arch/Geometry_SIMD.h
+++ b/Eigen/src/Geometry/arch/Geometry_SIMD.h
@@ -73,8 +73,12 @@
     Packet4f b = rhs_eval.template packet<RhsAlignment, Packet4f>(0);
     Packet4f mul1 = pmul(vec4f_swizzle1(a, 1, 2, 0, 3), vec4f_swizzle1(b, 2, 0, 1, 3));
     Packet4f mul2 = pmul(vec4f_swizzle1(a, 2, 0, 1, 3), vec4f_swizzle1(b, 1, 2, 0, 3));
+    a = psub(mul1, mul2);
+    // Zero-out last component in case of inf/nan.
+    const __m128i mask = _mm_setr_epi32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0);
+    a = _mm_castsi128_ps(_mm_and_si128(mask, _mm_castps_si128(a)));
     DstPlainType res;
-    pstoret<float, Packet4f, DstAlignment>(&res.x(), psub(mul1, mul2));
+    pstoret<float, Packet4f, DstAlignment>(res.data(), a);
     return res;
   }
 };

test/product.h

diff --git a/test/product.h b/test/product.h
index 74f01b0..f8eb5df 100644
--- a/test/product.h
+++ b/test/product.h
@@ -188,8 +188,10 @@
     VERIFY(areNotApprox(res2, square2 + m2.transpose() * m1, not_approx_epsilon));
   }
 
-  VERIFY_IS_APPROX(res.col(r).noalias() = square.adjoint() * square.col(r), (square.adjoint() * square.col(r)).eval());
-  VERIFY_IS_APPROX(res.col(r).noalias() = square * square.col(r), (square * square.col(r)).eval());
+  res.col(r).noalias() = square.adjoint() * square.col(r);
+  VERIFY_IS_APPROX(res.col(r), (square.adjoint() * square.col(r)).eval());
+  res.col(r).noalias() = square * square.col(r);
+  VERIFY_IS_APPROX(res.col(r), (square * square.col(r)).eval());
 
   // vector at runtime (see bug 1166)
   {