[Bug c++/97624] New: ICE: in dependent_type_p, at cp/pt.c:26515

[eugene at hutorny dot in.ua]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97624

            Bug ID: 97624
           Summary: ICE: in dependent_type_p, at cp/pt.c:26515
           Product: gcc
           Version: 10.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: eugene at hutorny dot in.ua
  Target Milestone: ---

Created attachment 49463
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49463&action=edit
Source file with minimal reproduceable code

C++ compiler fails on the following example:

template<unsigned TAG, typename T=const char*>
struct Tag {
        static constexpr auto tag = TAG;
        T value;
};

template<typename ... Tagged>
void bar(Tagged&& ... tagged) {
        const char* v[sizeof...(Tagged)] = {
        [Tagged::tag] = tagged.value ...
    }; 
}

using O = Tag<0>;

void foo() {
        bar(O{"ICE"});
}