1 // RUN: %clang_cc1 -std=c++20 -include %s %s -o %t 2 3 // RUN: %clang_cc1 -std=c++20 -emit-pch %s -o %t 4 // RUN: %clang_cc1 -std=c++20 -include-pch %t -verify %s 5 6 // expected-no-diagnostics 7 8 #ifndef HEADER 9 #define HEADER 10 11 int g; 12 struct A { union { int n, m; }; int *p; int A::*q; char buffer[32]; }; 13 14 template<A a> constexpr const A &get = a; 15 16 constexpr const A &v = get<A{}>; 17 constexpr const A &w = get<A{1, &g, &A::n, "hello"}>; 18 19 #else /*included pch*/ 20 21 template<A a> constexpr const A &get2 = a; 22 23 constexpr const A &v2 = get2<A{}>; 24 constexpr const A &w2 = get2<A{1, &g, &A::n, "hello\0\0\0\0\0"}>; 25 26 static_assert(&v == &v2); 27 static_assert(&w == &w2); 28 29 static_assert(&v != &w); 30 static_assert(&v2 != &w); 31 static_assert(&v != &w2); 32 static_assert(&v2 != &w2); 33 34 constexpr const A &v3 = get2<A{.n = 0}>; 35 constexpr const A &x = get2<A{.m = 0}>; 36 37 static_assert(&v == &v3); 38 static_assert(&v != &x); 39 40 #endif // HEADER 41