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[class.dtor]/example-1 is illegal #5790

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blackteahamburger opened this issue Aug 24, 2022 · 1 comment
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[class.dtor]/example-1 is illegal #5790

blackteahamburger opened this issue Aug 24, 2022 · 1 comment

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@blackteahamburger
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blackteahamburger commented Aug 24, 2022 •
edited

It makes multiple B's and D's destructor calls to D_object directly and indirectly via B_ptr, which is illegal according to [class.dtor]/19.

It's also illegal according to [basic.life]/9. Because D's destructor is non-trivial and a new D object is not constructed in place.
@jensmaurer
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The example never actually calls f, so this is not a problem. The purpose of the example is to show the meaning of different syntactic forms for invoking the destructor, as evidenced by the comments, not to present a program without undefined behavior.

@jensmaurer jensmaurer closed this as not planned Won't fix, can't repro, duplicate, stale Aug 24, 2022
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@jensmaurer @blackteahamburger