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tree.hh | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/tree.hh b/tree.hh index 1429da3..d780be3 100644 --- a/tree.hh +++ b/tree.hh @@ -71,6 +71,7 @@ #include <set> #include <queue> #include <algorithm> +#include <cstddef> // HP-style construct/destroy have gone from the standard, // so here is a copy.