chore: rule of 3 for strdup guard (#3905)

75007dda · Aaron Gokaslan · GitHub · 9bc27044 · 75007dda
Commit 75007dda authored Apr 26, 2022 by Aaron Gokaslan Committed by GitHub Apr 26, 2022
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include/pybind11/pybind11.h
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--- a/include/pybind11/pybind11.h
+++ b/include/pybind11/pybind11.h
@@ -312,6 +312,10 @@ protected:
    // along the way.
    class strdup_guard {
    public:
+        strdup_guard() = default;
+        strdup_guard(const strdup_guard &) = delete;
+        strdup_guard &operator=(const strdup_guard &) = delete;
+
        ~strdup_guard() {
            for (auto *s : strings) {
                std::free(s);