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During satisfaction that's entered through the three-parameter version of satisfy_declaration_constraints, current_function_decl gets set to the dependent DECL_TEMPLATE_RESULT for sake of access checking. This makes the predicate in_template_function return true during satisfaction from this entrypoint, which in turn makes calls to mark_used exit early before it does its full processing. This leads to us accepting the invalid testcase below due to mark_used never attempting to deduce the return type of A::foo() and detecting failure thereof. It seems wrong for in_template_function to be true during instantiation or during satisfaction, so this patch makes in_template_function inspect the less volatile cfun->decl instead of current_function_decl. gcc/cp/ChangeLog: * pt.c (in_template_function): Inspect cfun->decl instead of current_function_decl. gcc/testsuite/ChangeLog: * g++.dg/cpp2a/concepts-requires23.C: New test. |
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| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
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| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
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