57 lines
2.3 KiB
C++
57 lines
2.3 KiB
C++
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// RUN: %clang_cc1 -verify -std=c++23 -Wpre-c++23-compat %s
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constexpr int h(int n) {
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if (!n)
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return 0;
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static const int m = n; // expected-warning {{definition of a static variable in a constexpr function is incompatible with C++ standards before C++23}}
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return m;
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}
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constexpr int i(int n) {
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if (!n)
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return 0;
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thread_local const int m = n; // expected-warning {{definition of a thread_local variable in a constexpr function is incompatible with C++ standards before C++23}}
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return m;
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}
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constexpr int g() { // expected-error {{constexpr function never produces a constant expression}}
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goto test; // expected-note {{subexpression not valid in a constant expression}} \
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// expected-warning {{use of this statement in a constexpr function is incompatible with C++ standards before C++23}}
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test:
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return 0;
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}
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constexpr void h() {
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label:; // expected-warning {{use of this statement in a constexpr function is incompatible with C++ standards before C++23}}
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}
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struct NonLiteral { // expected-note 2 {{'NonLiteral' is not literal}}
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NonLiteral() {}
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};
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constexpr void non_literal() { // expected-error {{constexpr function never produces a constant expression}}
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NonLiteral n; // expected-note {{non-literal type 'NonLiteral' cannot be used in a constant expression}} \
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// expected-warning {{definition of a variable of non-literal type in a constexpr function is incompatible with C++ standards before C++23}}
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}
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constexpr void non_literal2(bool b) {
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if (!b)
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NonLiteral n; // expected-warning {{definition of a variable of non-literal type in a constexpr function is incompatible with C++ standards before C++23}}
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}
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constexpr int c_thread_local(int n) {
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if (!n)
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return 0;
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static _Thread_local int a; // expected-warning {{definition of a static variable in a constexpr function is incompatible with C++ standards before C++23}}
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_Thread_local int b; // // expected-error {{'_Thread_local' variables must have global storage}}
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return 0;
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}
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constexpr int gnu_thread_local(int n) {
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if (!n)
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return 0;
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static __thread int a; // expected-warning {{definition of a static variable in a constexpr function is incompatible with C++ standards before C++23}}
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__thread int b; // expected-error {{'__thread' variables must have global storage}}
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return 0;
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}
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