Index: util/stdlib/string_number_conversion.cc |
diff --git a/util/stdlib/string_number_conversion.cc b/util/stdlib/string_number_conversion.cc |
index a7c7d519dedfb22bb9332af7685325919fdea42b..de8b5788e37da4845c124c06776cd2089117752c 100644 |
--- a/util/stdlib/string_number_conversion.cc |
+++ b/util/stdlib/string_number_conversion.cc |
@@ -29,7 +29,7 @@ |
// the std::numeric_limits<>::min() and max() functions will not be marked as |
// constexpr, and thus won’t be usable with C++11’s static_assert(). In that |
// case, a run-time CHECK() will have to do. |
-#if CXX_LIBRARY_VERSION >= 2011 |
+#if CXX_LIBRARY_VERSION >= 2011 && CXX_LIBRARY_HAS_CONSTEXPR |
#define CONSTEXPR_STATIC_ASSERT(condition, message) \ |
static_assert(condition, message) |
#else |