2cd5333d16
In explicit17.C, we weren't detecting an unexpanded parameter pack in explicit(bool), so we crashed on a TEMPLATE_PARM_INDEX in constexpr. I noticed the same is true for noexcept(), but only since my patch to implement delayed parsing of noexcept. Previously, we would detect the unexpanded pack in push_template_decl but now the noexcept expression has not yet been parsed, so we need to do it a bit later. gcc/cp/ChangeLog: PR c++/99844 * decl.c (build_explicit_specifier): Call check_for_bare_parameter_packs. * except.c (build_noexcept_spec): Likewise. gcc/testsuite/ChangeLog: PR c++/99844 * g++.dg/cpp2a/explicit16.C: Use c++20. * g++.dg/cpp0x/noexcept66.C: New test. * g++.dg/cpp2a/explicit17.C: New test.
22 lines
387 B
C
22 lines
387 B
C
// PR c++/95066 - explicit malfunction with dependent expression.
|
|
// { dg-do compile { target c++20 } }
|
|
|
|
template <typename T>
|
|
struct Foo {
|
|
template <typename U>
|
|
explicit(static_cast<U>(true)) operator Foo<U>();
|
|
};
|
|
|
|
template <typename T>
|
|
template <typename U>
|
|
Foo<T>::operator Foo<U>() {
|
|
return {};
|
|
}
|
|
|
|
int
|
|
main ()
|
|
{
|
|
Foo<float> a;
|
|
Foo<int> b = a; // { dg-error "conversion" }
|
|
}
|