forked from OSchip/llvm-project
131 lines
4.2 KiB
C++
131 lines
4.2 KiB
C++
// RUN: %clang_cc1 -std=gnu++20 -fsyntax-only -verify %s
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template<bool If, typename Type>
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struct enable_if {
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using type= Type;
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};
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template<typename Type>
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struct enable_if<false, Type> {};
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template<typename T1, typename T2>
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struct is_same {
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static constexpr bool value = false;
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};
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template<typename T1>
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struct is_same<T1, T1> {
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static constexpr bool value = true;
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};
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constexpr const char *str() {
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return "abc";
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}
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template<typename T, typename enable_if<!is_same<int, T>::value, int>::type = 0>
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constexpr T fail_on_int(T t) {return t;}
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// expected-note@-1 {{candidate template ignored: requirement}}
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namespace test0 {
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template<typename T, T v>
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struct A {
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[[clang::annotate("test", fail_on_int(v))]] void t() {}
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// expected-error@-1 {{no matching function for call to 'fail_on_int'}}
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[[clang::annotate("test", (typename enable_if<!is_same<long, T>::value, int>::type)v)]] void t1() {}
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// expected-error@-1 {{failed requirement}}
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};
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A<int, 9> a;
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// expected-note@-1 {{in instantiation of template class}}
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A<long, 7> a1;
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// expected-note@-1 {{in instantiation of template class}}
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A<unsigned long, 6> a2;
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template<typename T>
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struct B {
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[[clang::annotate("test", ((void)T{}, 9))]] void t() {}
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// expected-error@-1 {{illegal initializer type 'void'}}
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};
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B<int> b;
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B<void> b1;
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// expected-note@-1 {{in instantiation of template class}}
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}
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namespace test1 {
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int g_i; // expected-note {{declared here}}
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[[clang::annotate("test", "arg")]] void t3() {}
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template <typename T, T V>
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struct B {
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static T b; // expected-note {{declared here}}
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static constexpr T cb = V;
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template <typename T1, T1 V1>
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struct foo {
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static T1 f; // expected-note {{declared here}}
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static constexpr T1 cf = V1;
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int v __attribute__((annotate("v_ann_0", str(), 90, V, g_i))) __attribute__((annotate("v_ann_1", V1)));
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// expected-error@-1 {{'annotate' attribute requires parameter 4 to be a constant expression}}
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// expected-note@-2 {{is not allowed in a constant expression}}
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[[clang::annotate("qdwqwd", cf, cb)]] void t() {}
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[[clang::annotate("qdwqwd", f, cb)]] void t1() {}
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// expected-error@-1 {{'annotate' attribute requires parameter 1 to be a constant expression}}
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// expected-note@-2 {{is not allowed in a constant expression}}
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[[clang::annotate("jui", b, cf)]] void t2() {}
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// expected-error@-1 {{'annotate' attribute requires parameter 1 to be a constant expression}}
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// expected-note@-2 {{is not allowed in a constant expression}}
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[[clang::annotate("jui", ((void)b, 0), cf)]] [[clang::annotate("jui", &b, cf, &foo::t2, str())]] void t3() {}
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};
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};
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static B<int long, -1>::foo<unsigned, 9> gf; // expected-note {{in instantiation of}}
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static B<int long, -2> gf1;
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} // namespace test1
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namespace test2 {
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template<int I>
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int f() {
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[[clang::annotate("test", I)]] int v = 0; // expected-note {{declared here}}
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[[clang::annotate("test", v)]] int v2 = 0;
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// expected-error@-1 {{'annotate' attribute requires parameter 1 to be a constant expression}}
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// expected-note@-2 {{is not allowed in a constant expression}}
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[[clang::annotate("test", rtyui)]] int v3 = 0;
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// expected-error@-1 {{use of undeclared identifier 'rtyui'}}
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}
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void test() {}
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}
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namespace test3 {
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void f() {
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int n = 10;
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int vla[n];
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[[clang::annotate("vlas are awful", sizeof(vla))]] int i = 0; // reject, the sizeof is not unevaluated
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// expected-error@-1 {{'annotate' attribute requires parameter 1 to be a constant expression}}
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// expected-note@-2 {{subexpression not valid in a constant expression}}
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[[clang::annotate("_Generic selection expression should be fine", _Generic(n, int : 0, default : 1))]]
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int j = 0; // second arg should resolve to 0 fine
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}
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void designator();
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[[clang::annotate("function designators?", designator)]] int k = 0; // Should work?
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void self() {
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[[clang::annotate("function designators?", self)]] int k = 0;
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}
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}
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namespace test4 {
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constexpr int foldable_but_invalid() {
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int *A = new int(0);
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// expected-note@-1 {{allocation performed here was not deallocated}}
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return *A;
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}
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[[clang::annotate("", foldable_but_invalid())]] void f1() {}
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// expected-error@-1 {{'annotate' attribute requires parameter 1 to be a constant expression}}
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}
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