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Here we ICE because early_check_defaulted_comparison passed a null ctx to same_type_p. The attached test is ill-formed according to [class.compare.default]/1, so fixed by detecting this case early. PR c++/94478 - ICE with defaulted comparison operator * method.c (early_check_defaulted_comparison): Give an error when the context is null. * g++.dg/cpp2a/spaceship-err4.C: New test.
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