| 1 | // RUN: %clang_cc1 -fsyntax-only -std=c++98 -Wc++11-compat-pedantic -verify %s |
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| 2 | // RUN: %clang_cc1 -fsyntax-only -std=c++17 -Wc++11-compat-pedantic -verify %s |
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| 3 | |
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| 4 | #if __cplusplus < 201103L |
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| 5 | |
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| 6 | namespace N { |
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| 7 | template<typename T> void f(T) {} // expected-note 2{{here}} |
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| 8 | namespace M { |
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| 9 | template void ::N::f<int>(int); // expected-warning {{explicit instantiation of 'f' not in a namespace enclosing 'N'}} |
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| 10 | } |
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| 11 | } |
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| 12 | using namespace N; |
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| 13 | template void f<char>(char); // expected-warning {{explicit instantiation of 'N::f' must occur in namespace 'N'}} |
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| 14 | |
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| 15 | template<typename T> void g(T) {} // expected-note 2{{here}} |
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| 16 | namespace M { |
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| 17 | template void g<int>(int); // expected-warning {{explicit instantiation of 'g' must occur at global scope}} |
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| 18 | template void ::g<char>(char); // expected-warning {{explicit instantiation of 'g' must occur at global scope}} |
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| 19 | } |
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| 20 | |
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| 21 | template inline void g<double>(double); // expected-warning {{explicit instantiation cannot be 'inline'}} |
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| 22 | |
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| 23 | void g() { |
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| 24 | auto int n = 0; // expected-warning {{'auto' storage class specifier is redundant and incompatible with C++11}} |
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| 25 | } |
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| 26 | |
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| 27 | int n; |
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| 28 | struct S { |
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| 29 | char c; |
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| 30 | } |
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| 31 | s = { n }, // expected-warning {{non-constant-expression cannot be narrowed from type 'int' to 'char' in initializer list in C++11}} expected-note {{explicit cast}} |
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| 32 | t = { 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}} |
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| 33 | |
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| 34 | #define PRIuS "uS" |
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| 35 | int printf(const char *, ...); |
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| 36 | typedef __typeof(sizeof(int)) size_t; |
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| 37 | void h(size_t foo, size_t bar) { |
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| 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}} |
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| 39 | } |
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| 40 | |
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| 41 | #define _x + 1 |
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| 42 | char c = 'x'_x; // expected-warning {{will be treated as a user-defined literal suffix}} |
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| 43 | |
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| 44 | template<int ...N> int f() { // expected-warning {{C++11 extension}} |
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| 45 | return (N + ...); // expected-warning {{C++17 extension}} |
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| 46 | } |
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| 47 | |
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| 48 | #else |
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| 49 | |
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| 50 | decltype(auto) x = 0; // expected-warning {{'decltype(auto)' type specifier is incompatible}} |
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| 51 | |
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| 52 | auto init_capture = [a(0)] {}; // expected-warning {{initialized lambda captures are incompatible with C++ standards before C++14}} |
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| 53 | |
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| 54 | auto generic_lambda = |
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| 55 | []( |
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| 56 | auto // expected-warning {{generic lambdas are incompatible}} |
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| 57 | *a) {}; |
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| 58 | |
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| 59 | auto deduced_return_type(); // expected-warning {{incompatible with C++ standards before C++14}} |
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| 60 | auto *another_deduced_return_type(); // expected-warning {{incompatible with C++ standards before C++14}} |
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| 61 | decltype(auto) also_deduced_return_type(); // expected-warning {{return type deduction}} expected-warning {{'decltype(auto)' type specifier is incompatible}} |
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| 62 | int f(); |
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| 63 | auto (*not_deduced_return_type)() = f; |
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| 64 | |
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| 65 | auto deduced_lambda_return_type = []() -> |
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| 66 | auto // expected-warning {{return type deduction is incompatible}} |
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| 67 | {}; |
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| 68 | |
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| 69 | auto trailing_non_deduced_return_type() -> int; |
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| 70 | auto trailing_deduced_return_type() -> auto; // expected-warning {{incompatible with C++ standards before C++14}} |
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| 71 | |
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| 72 | struct A { |
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| 73 | operator auto(); // expected-warning {{return type deduction is incompatible}} |
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| 74 | }; |
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| 75 | |
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| 76 | #endif |
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| 77 | |
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