Fix fall through path

Author: mborland

include/boost/safe_numbers/detail/int128/detail/common_div.hpp

@@ -447,7 +447,7 @@ BOOST_SAFE_NUMBERS_DETAIL_INT128_HOST_DEVICE BOOST_SAFE_NUMBERS_DETAIL_INT128_FO
         return;
     }
 
-    #else
+    #endif
 
     if (rhs <= UINT32_MAX)
     {
@@ -467,8 +467,6 @@ BOOST_SAFE_NUMBERS_DETAIL_INT128_HOST_DEVICE BOOST_SAFE_NUMBERS_DETAIL_INT128_FO
         quotient = impl::from_words<T>(q);
         remainder = impl::from_words<T>(u);
     }
-
-    #endif
 }
 
 template <typename T>

include/boost/safe_numbers/literals.hpp

@@ -70,13 +70,14 @@ BOOST_SAFE_NUMBERS_EXPORT constexpr auto operator ""_u128(const char* str) -> u1
     int128::uint128_t result;
     const auto r {int128::detail::from_chars(str, str + int128::detail::strlen(str), result)};
 
-    if (r == EDOM)
+    switch (r)
     {
-        BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::overflow_error, "Overflow detected in literal construction");
-    }
-    else if (r == EINVAL)
-    {
-        BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::invalid_argument, "Invalid conversion from literal");
+        case EDOM:
+            BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::overflow_error, "Overflow detected in literal construction");
+        case EINVAL:
+            BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::invalid_argument, "Invalid conversion from literal");
+        default:
+            static_cast<void>(r);
     }
 
     return u128{result};
@@ -127,13 +128,14 @@ BOOST_SAFE_NUMBERS_EXPORT constexpr auto operator ""_i128(const char* str) -> i1
     int128::int128_t result;
     const auto r {int128::detail::from_chars(str, str + int128::detail::strlen(str), result)};
 
-    if (r == EDOM)
-    {
-        BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::overflow_error, "Overflow detected in literal construction");
-    }
-    else if (r == EINVAL)
+    switch (r)
     {
-        BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::invalid_argument, "Invalid conversion from literal");
+        case EDOM:
+            BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::overflow_error, "Overflow detected in literal construction");
+        case EINVAL:
+            BOOST_SAFE_NUMBERS_THROW_EXCEPTION(std::invalid_argument, "Invalid conversion from literal");
+        default:
+            static_cast<void>(r);
     }
 
     return i128{result};