llvm-capstone/clang/test/SemaTemplate/instantiation-default-1.cpp
Matheus Izvekov ab1140874f
[clang] Instantiate NTTPs and template default arguments with sugar
This makes use of the changes introduced in D134604, in order to
instantiate non-type template parameters and default template arguments
with a final sugared substitution.

This comes at no additional relevant cost.
Since we don't track / unique them in specializations, we wouldn't be
able to resugar them later anyway.

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>

Differential Revision: https://reviews.llvm.org/D136564
2022-10-31 17:57:18 +01:00

103 lines
2.2 KiB
C++

// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename T, typename U = const T> struct Def1;
template<> struct Def1<int> {
void foo();
};
template<> struct Def1<const int> { // expected-note{{previous definition is here}}
void bar();
};
template<> struct Def1<int&> {
void wibble();
};
void test_Def1(Def1<int, const int> *d1, Def1<const int, const int> *d2,
Def1<int&, int&> *d3) {
d1->foo();
d2->bar();
d3->wibble();
}
template<typename T, // FIXME: bad error message below, needs better location info
typename T2 = const T*> // expected-error{{'T2' declared as a pointer to a reference}}
struct Def2;
template<> struct Def2<int> {
void foo();
};
void test_Def2(Def2<int, int const*> *d2) {
d2->foo();
}
typedef int& int_ref_t;
Def2<int_ref_t> *d2; // expected-note{{in instantiation of default argument for 'Def2<int_ref_t>' required here}}
template<> struct Def1<const int> { }; // expected-error{{redefinition of 'Def1<const int>'}}
template<typename T, typename T2 = T&> struct Def3;
template<> struct Def3<int> {
void foo();
};
template<> struct Def3<int&> {
void bar();
};
void test_Def3(Def3<int, int&> *d3a, Def3<int&, int&> *d3b) {
d3a->foo();
d3b->bar();
}
template<typename T, typename T2 = T[]> struct Def4;
template<> struct Def4<int> {
void foo();
};
void test_Def4(Def4<int, int[]> *d4a) {
d4a->foo();
}
template<typename T, typename T2 = T const[12]> struct Def5;
template<> struct Def5<int> {
void foo();
};
template<> struct Def5<int, int const[13]> {
void bar();
};
void test_Def5(Def5<int, const int[12]> *d5a, Def5<int, const int[13]> *d5b) {
d5a->foo();
d5b->bar();
}
template<typename R, typename Arg1, typename Arg2 = Arg1,
typename FuncType = R (*)(Arg1, Arg2)>
struct Def6;
template<> struct Def6<int, float> {
void foo();
};
template<> struct Def6<bool, int[5], float(double, double)> {
void bar();
};
bool test_Def6(Def6<int, float, float> *d6a,
Def6<int, float, float, int (*)(float, float)> *d6b,
Def6<bool, int[5], float(double, double),
bool(*)(int*, float(*)(double, double))> *d6c) {
d6a->foo();
d6b->foo();
d6c->bar();
return d6a == d6b;
}