Viewing file:  nsdmi-aggr1.C (954 B) -rw-r--r--
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// PR c++/103681
// { dg-do compile { target c++11 } }
// { dg-additional-options "-fabi-version=16 -Wabi" }
struct A {
long l;
char c = -1;
};
struct B : public A {
char d;
// { dg-warning "offset" "" { target c++14 } .-1 }
};
#define SA(X) static_assert(X,#X)
SA(sizeof (B) == sizeof (A));
// { dg-error "static assertion" "" { target c++14 } .-1 }
struct X { char d; };
struct B2 : A, X { };
// { dg-warning "offset" "" { target c++14 } .-1 }
SA(sizeof (B2) == sizeof (A));
// { dg-error "static assertion" "" { target c++14 } .-1 }
#if __cplusplus > 201800L
struct C {
[[no_unique_address]] A a;
char d;
// { dg-warning "offset" "" { target c++20 } .-1 }
};
SA(sizeof (C) == sizeof (A));
// { dg-error "static assertion" "" { target c++20 } .-1 }
struct C2 : A, X { };
// { dg-warning "offset" "" { target c++20 } .-1 }
SA(sizeof (B2) == sizeof (A));
// { dg-error "static assertion" "" { target c++20 } .-1 }
#endif /* C++20 */
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