diff --git a/include/boost/math/special_functions/powm1.hpp b/include/boost/math/special_functions/powm1.hpp
index c81d84ea0..05b5a5d3f 100644
--- a/include/boost/math/special_functions/powm1.hpp
+++ b/include/boost/math/special_functions/powm1.hpp
@@ -26,7 +26,6 @@ inline T powm1_imp(const T x, const T y, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    static const char* function = "boost::math::powm1<%1%>(%1%, %1%)";
-
    if (x > 0)
    {
       if ((fabs(y * (x - 1)) < 0.5) || (fabs(y) < 0.2))
@@ -41,7 +40,7 @@ inline T powm1_imp(const T x, const T y, const Policy& pol)
          // fall through....
       }
    }
-   else if (boost::math::signbit(x)) // Need to error check -0 here as well
+   else if ((boost::math::signbit)(x)) // Need to error check -0 here as well
    {
       // y had better be an integer:
       if (boost::math::trunc(y) != y)
diff --git a/test/git_issue_705.cpp b/test/git_issue_705.cpp
index f9476aa53..4b205421a 100644
--- a/test/git_issue_705.cpp
+++ b/test/git_issue_705.cpp
@@ -3,6 +3,8 @@
 // Boost Software License, Version 1.0. (See accompanying file
 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
+#define BOOST_MATH_OVERFLOW_ERROR_POLICY ignore_error
+
 #include "math_unit_test.hpp"
 #include <cmath>
 #include <boost/math/special_functions/powm1.hpp>
diff --git a/test/std_real_concept_check.cpp b/test/std_real_concept_check.cpp
index 4752f9608..3edccb738 100644
--- a/test/std_real_concept_check.cpp
+++ b/test/std_real_concept_check.cpp
@@ -71,6 +71,9 @@ struct numeric_limits<boost::math::concepts::std_real_concept>
    static const bool traps = false;
    static const bool tinyness_before = false;
    static const float_round_style round_style = round_toward_zero;
+#ifndef BOOST_NO_CXX11_NUMERIC_LIMITS
+   static const int max_digits10 = digits10 + 2;
+#endif
 };
 }
 #endif