diff --git a/gcc/cp/search.cc b/gcc/cp/search.cc index c948839dc5337b4d564531dc19641259c5cb664c..827f48e8604f6b8f6acb0461fcc521a4602b5756 100644 --- a/gcc/cp/search.cc +++ b/gcc/cp/search.cc @@ -1975,6 +1975,17 @@ maybe_check_overriding_exception_spec (tree overrider, tree basefn) || UNPARSED_NOEXCEPT_SPEC_P (over_throw)) return true; + /* We also have to defer checking when we're in a template and couldn't + instantiate & evaluate the noexcept to true/false. */ + if (processing_template_decl) + if ((base_throw + && base_throw != noexcept_true_spec + && base_throw != noexcept_false_spec) + || (over_throw + && over_throw != noexcept_true_spec + && over_throw != noexcept_false_spec)) + return true; + if (!comp_except_specs (base_throw, over_throw, ce_derived)) { auto_diagnostic_group d; diff --git a/gcc/testsuite/g++.dg/cpp0x/noexcept83.C b/gcc/testsuite/g++.dg/cpp0x/noexcept83.C new file mode 100644 index 0000000000000000000000000000000000000000..47832bbb44d38495b867ffe086fda59a4ebde46e --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/noexcept83.C @@ -0,0 +1,37 @@ +// PR c++/113158 +// { dg-do compile { target c++11 } } + +template<typename T> +struct V { + static constexpr bool t = false; +}; +struct base { + virtual int f() = 0; +}; + +template<typename T> +struct derived : base { + int f() noexcept(V<T>::t) override; +}; + +struct base2 { + virtual int f() noexcept = 0; +}; + +template<bool B> +struct W { + static constexpr bool t = B; +}; + +template<bool B> +struct derived2 : base2 { + int f() noexcept(W<B>::t) override; // { dg-error "looser exception specification" } +}; + +void +g () +{ + derived<int> d1; + derived2<false> d2; // { dg-message "required from here" } + derived2<true> d3; +}