Patrick Palka
edec2660ff
During deduction, when the template of the argument for a bound ttp is a template template parameter, we need to consider the TEMPLATE_TEMPLATE_PARAMETER for matching rather than the TEMPLATE_DECL thereof, because the canonical form of a template template parameter as a template argument is the former tree, not the latter. PR c++/67829 gcc/cp/ChangeLog: * pt.c (unify) <case BOUND_TEMPLATE_TEMPLATE_PARM>: When the TEMPLATE_DECL of a BOUND_TEMPLATE_TEMPLATE_PARM argument is a template template parameter, adjust to the TEMPLATE_TEMPLATE_PARAMETER before falling through. gcc/testsuite/ChangeLog: * g++.dg/template/ttp34.C: New test. * g++.dg/template/ttp34a.C: New test. * g++.dg/template/ttp34b.C: New test.
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