llvm-project/clang/test/PCH/chain-cxx.cpp
Richard Smith ed2974f3cf C++ constant expression handling: eagerly instantiate static const integral data
members of class templates so that their values can be used in ICEs. This
required reverting r105465, to get such instantiated members to be included in
serialized ASTs.

llvm-svn: 147023
2011-12-21 00:25:33 +00:00

143 lines
2.9 KiB
C++

// Test C++ chained PCH functionality
// Without PCH
// RUN: %clang_cc1 -fsyntax-only -verify -include %s -include %s %s
// With PCH
// RUN: %clang_cc1 -fsyntax-only -verify %s -chain-include %s -chain-include %s
#ifndef HEADER1
#define HEADER1
//===----------------------------------------------------------------------===//
// Primary header for C++ chained PCH test
void f();
// Name not appearing in dependent
void pf();
namespace ns {
void g();
void pg();
}
template <typename T>
struct S { typedef int G; };
// Partially specialize
template <typename T>
struct S<T *> { typedef int H; };
template <typename T> struct TS2;
typedef TS2<int> TS2int;
template <typename T> struct TestBaseSpecifiers { };
template<typename T> struct TestBaseSpecifiers2 : TestBaseSpecifiers<T> { };
template <typename T>
struct TS3 {
static const int value = 0;
static const int value2;
};
template <typename T>
const int TS3<T>::value;
template <typename T>
const int TS3<T>::value2 = 1;
// Instantiate struct, but not value.
struct instantiate : TS3<int> {};
// Typedef
typedef int Integer;
//===----------------------------------------------------------------------===//
#elif not defined(HEADER2)
#define HEADER2
#if !defined(HEADER1)
#error Header inclusion order messed up
#endif
//===----------------------------------------------------------------------===//
// Dependent header for C++ chained PCH test
// Overload function from primary
void f(int);
// Add function with different name
void f2();
// Reopen namespace
namespace ns {
// Overload function from primary
void g(int);
// Add different name
void g2();
}
// Specialize template from primary
template <>
struct S<int> { typedef int I; };
// Partially specialize
template <typename T>
struct S<T &> { typedef int J; };
// Specialize previous partial specialization
template <>
struct S<int *> { typedef int K; };
// Specialize the partial specialization from this file
template <>
struct S<int &> { typedef int L; };
template <typename T> struct TS2 { };
struct TestBaseSpecifiers3 { };
struct TestBaseSpecifiers4 : TestBaseSpecifiers3 { };
struct A { };
struct B : A { };
// Instantiate TS3's members.
static const int ts3m1 = TS3<int>::value;
extern int arr[TS3<int>::value2];
// Redefinition of typedef
typedef int Integer;
//===----------------------------------------------------------------------===//
#else
//===----------------------------------------------------------------------===//
void test() {
f();
f(1);
pf();
f2();
ns::g();
ns::g(1);
ns::pg();
ns::g2();
typedef S<double>::G T1;
typedef S<double *>::H T2;
typedef S<int>::I T3;
typedef S<double &>::J T4;
typedef S<int *>::K T5;
typedef S<int &>::L T6;
TS2int ts2;
B b;
Integer i = 17;
}
// Should have remembered that there is a definition.
static const int ts3m2 = TS3<int>::value;
int arr[TS3<int>::value2];
//===----------------------------------------------------------------------===//
#endif