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-rw-r--r--include/ruby/internal/special_consts.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ruby/internal/special_consts.h b/include/ruby/internal/special_consts.h
index 6943ef9b94..ed2428e087 100644
--- a/include/ruby/internal/special_consts.h
+++ b/include/ruby/internal/special_consts.h
@@ -192,7 +192,7 @@ RB_UNDEF_P(VALUE obj)
}
RBIMPL_ATTR_CONST()
-RBIMPL_ATTR_CONSTEXPR(CXX11)
+RBIMPL_ATTR_CONSTEXPR(CXX14)
RBIMPL_ATTR_ARTIFICIAL()
/**
* Checks if the given object is nil or undef. Can be used to see if