77 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -std=c++98 -Wc++11-compat-pedantic -verify %s2// RUN: %clang_cc1 -fsyntax-only -std=c++17 -Wc++11-compat-pedantic -verify %s3 4#if __cplusplus < 201103L5 6namespace N {7 template<typename T> void f(T) {} // expected-note 2{{here}}8 namespace M {9 template void ::N::f<int>(int); // expected-warning {{explicit instantiation of 'f' not in a namespace enclosing 'N'}}10 }11}12using namespace N;13template void f<char>(char); // expected-warning {{explicit instantiation of 'N::f' must occur in namespace 'N'}}14 15template<typename T> void g(T) {} // expected-note 2{{here}}16namespace M {17 template void g<int>(int); // expected-warning {{explicit instantiation of 'g' must occur at global scope}}18 template void ::g<char>(char); // expected-warning {{explicit instantiation of 'g' must occur at global scope}}19}20 21template inline void g<double>(double); // expected-warning {{explicit instantiation cannot be 'inline'}}22 23void g() {24 auto int n = 0; // expected-warning {{'auto' storage class specifier is redundant and incompatible with C++11}}25}26 27int n;28struct S {29 char c;30}31s = { n }, // expected-warning {{non-constant-expression cannot be narrowed from type 'int' to 'char' in initializer list in C++11}} expected-note {{explicit cast}}32t = { 1234 }; // expected-warning {{constant expression evaluates to 1234 which cannot be narrowed to type 'char' in C++11}} expected-warning {{changes value}} expected-note {{explicit cast}}33 34#define PRIuS "zu"35int printf(const char *, ...);36typedef __typeof(sizeof(int)) size_t;37void h(size_t foo, size_t bar) {38 printf("foo is %"PRIuS", bar is %"PRIuS, foo, bar); // expected-warning 2{{identifier after literal will be treated as a reserved user-defined literal suffix in C++11}}39}40 41#define _x + 142char c = 'x'_x; // expected-warning {{will be treated as a user-defined literal suffix}}43 44template<int ...N> int f() { // expected-warning {{C++11 extension}}45 return (N + ...); // expected-warning {{C++17 extension}}46}47 48#else49 50decltype(auto) x = 0; // expected-warning {{'decltype(auto)' type specifier is incompatible}}51 52auto init_capture = [a(0)] {}; // expected-warning {{initialized lambda captures are incompatible with C++ standards before C++14}}53 54auto generic_lambda =55 [](56 auto // expected-warning {{generic lambdas are incompatible}}57 *a) {};58 59auto deduced_return_type(); // expected-warning {{incompatible with C++ standards before C++14}}60auto *another_deduced_return_type(); // expected-warning {{incompatible with C++ standards before C++14}}61decltype(auto) also_deduced_return_type(); // expected-warning {{return type deduction}} expected-warning {{'decltype(auto)' type specifier is incompatible}}62int f();63auto (*not_deduced_return_type)() = f;64 65auto deduced_lambda_return_type = []() ->66 auto // expected-warning {{return type deduction is incompatible}}67{};68 69auto trailing_non_deduced_return_type() -> int;70auto trailing_deduced_return_type() -> auto; // expected-warning {{incompatible with C++ standards before C++14}}71 72struct A {73 operator auto(); // expected-warning {{return type deduction is incompatible}}74};75 76#endif77