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This resolves parts of Core issues 1001/1322 by rebuilding the function type of an instantiated function template in terms of its formal parameter types whenever the original function type and formal parameter types disagree about the type of a parameter after substitution. gcc/cp/ChangeLog: Core issues 1001 and 1322 PR c++/92010 * pt.c (rebuild_function_or_method_type): Split function out from ... (tsubst_function_type): ... here. (maybe_rebuild_function_decl_type): New function. (tsubst_function_decl): Use it. gcc/testsuite/ChangeLog: Core issues 1001 and 1322 PR c++/92010 * g++.dg/cpp2a/lambda-uneval11.c: New test. * g++.dg/template/array33.C: New test. * g++.dg/template/array34.C: New test. * g++.dg/template/defarg22.C: New test.
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