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d7f33a35bf
destructible_expr was wrongly assuming that TO is a class type. When is_xible_helper was added in r8-742 it returned early for abstract class types, which is correct for __is_constructible, but not __is_assignable or (now) __is_destructible. PR c++/107600 gcc/cp/ChangeLog: * method.cc (destructible_expr): Handle non-classes. (constructible_expr): Check for abstract class here... (is_xible_helper): ...not here. gcc/testsuite/ChangeLog: * g++.dg/ext/is_destructible2.C: New test.
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