llvm-for-llvmta/tools/clang/test/PCH/cxx11-constexpr.cpp

44 lines
996 B
C++
Raw Permalink Normal View History

2022-04-25 13:02:35 +02:00
// RUN: %clang_cc1 -pedantic-errors -std=c++11 -emit-pch %s -o %t
// RUN: %clang_cc1 -pedantic-errors -std=c++11 -include-pch %t -verify %s
// RUN: %clang_cc1 -pedantic-errors -std=c++11 -emit-pch -fpch-instantiate-templates %s -o %t
// RUN: %clang_cc1 -pedantic-errors -std=c++11 -include-pch %t -verify %s
#ifndef HEADER_INCLUDED
#define HEADER_INCLUDED
struct B {
B();
constexpr B(char) {}
};
struct C {
B b;
double d = 0.0;
};
struct D : B {
constexpr D(int n) : B('x'), k(2*n+1) {}
int k;
};
constexpr int value = 7;
template<typename T>
constexpr T plus_seven(T other) {
return value + other;
}
#else
static_assert(D(4).k == 9, "");
constexpr int f(C c) { return 0; } // expected-error {{not a literal type}}
// expected-note@16 {{not an aggregate and has no constexpr constructors}}
constexpr B b; // expected-error {{constant expression}} expected-note {{non-constexpr}}
// expected-note@12 {{here}}
static_assert(plus_seven(3) == 10, "");
#endif