gcc/testsuite/g++.dg/cpp1z/pr83020.C


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// PR c++/83020
// { dg-options -std=c++17 }

struct NoDefault {
    int val = 1234;
    NoDefault(int v) : val(v) {}
};
template <class T>
struct Whoops {
    const char *str;
    T obj;
    Whoops(const char *s, T v = T()) : str(s), obj(v) {}  // { dg-error "no matching" }
};
const char *test() {
    return Whoops<NoDefault>("hi").str;
}