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[defns.dynamic.type] Say "most derived object" in the example #6203

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[defns.dynamic.type] Say "most derived object" in the example #6203

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frederick-vs-ja
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and

  • don't say the static type of a pointer, because the difference between static and dynamic types is only present for glvalues of class types;
  • say that the B* pointer is pointing to a B base class subobject, which avoids involving problematic cases of reinterpret_cast or static_cast from cv void* (see [expr.static.cast]/14).

Fixes #5762.
Fixes cplusplus/CWG#257.

JohelEGP
JohelEGP suggested changes Mar 23, 2023
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@tkoeppe tkoeppe requested a review from jensmaurer May 12, 2023 21:07
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[defns.dynamic.type] A misleading note [defns.dynamic.type] The note is misleading
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