116 lines
7.1 KiB
C++
116 lines
7.1 KiB
C++
|
// RUN: %clang_cc1 -std=c++20 -fsyntax-only -fcxx-exceptions -verify=ref20 %s
|
||
|
|
// RUN: %clang_cc1 -std=c++23 -fsyntax-only -fcxx-exceptions -verify=ref23 %s
|
||
|
|
// RUN: %clang_cc1 -std=c++20 -fsyntax-only -fcxx-exceptions -verify=expected20 %s -fexperimental-new-constant-interpreter
|
||
|
|
// RUN: %clang_cc1 -std=c++23 -fsyntax-only -fcxx-exceptions -verify=expected23 %s -fexperimental-new-constant-interpreter
|
||
|
|
|
||
|
|
|
||
|
|
/// FIXME: The new interpreter is missing all the 'control flows through...' diagnostics.
|
||
|
|
|
||
|
|
constexpr int f(int n) { // ref20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// ref23-error {{constexpr function never produces a constant expression}}
|
||
|
|
static const int m = n; // ref20-note {{control flows through the definition of a static variable}} \
|
||
|
|
// ref20-warning {{is a C++23 extension}} \
|
||
|
|
// ref23-note {{control flows through the definition of a static variable}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}}
|
||
|
|
|
||
|
|
return m;
|
||
|
|
}
|
||
|
|
constexpr int g(int n) { // ref20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// ref23-error {{constexpr function never produces a constant expression}}
|
||
|
|
thread_local const int m = n; // ref20-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// ref20-warning {{is a C++23 extension}} \
|
||
|
|
// ref23-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}}
|
||
|
|
return m;
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr int c_thread_local(int n) { // ref20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// ref23-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// expected20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// expected23-error {{constexpr function never produces a constant expression}}
|
||
|
|
static _Thread_local int m = 0; // ref20-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// ref20-warning {{is a C++23 extension}} \
|
||
|
|
// ref23-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}} \
|
||
|
|
// expected20-note {{declared here}} \
|
||
|
|
// expected23-note {{declared here}}
|
||
|
|
return m; // expected20-note {{read of non-const variable}} \
|
||
|
|
// expected23-note {{read of non-const variable}}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
constexpr int gnu_thread_local(int n) { // ref20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// ref23-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// expected20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// expected23-error {{constexpr function never produces a constant expression}}
|
||
|
|
static __thread int m = 0; // ref20-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// ref20-warning {{is a C++23 extension}} \
|
||
|
|
// ref23-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}} \
|
||
|
|
// expected20-note {{declared here}} \
|
||
|
|
// expected23-note {{declared here}}
|
||
|
|
return m; // expected20-note {{read of non-const variable}} \
|
||
|
|
// expected23-note {{read of non-const variable}}
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr int h(int n) { // ref20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// ref23-error {{constexpr function never produces a constant expression}}
|
||
|
|
static const int m = n; // ref20-note {{control flows through the definition of a static variable}} \
|
||
|
|
// ref20-warning {{is a C++23 extension}} \
|
||
|
|
// ref23-note {{control flows through the definition of a static variable}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}}
|
||
|
|
return &m - &m;
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr int i(int n) { // ref20-error {{constexpr function never produces a constant expression}} \
|
||
|
|
// ref23-error {{constexpr function never produces a constant expression}}
|
||
|
|
thread_local const int m = n; // ref20-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// ref20-warning {{is a C++23 extension}} \
|
||
|
|
// ref23-note {{control flows through the definition of a thread_local variable}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}}
|
||
|
|
return &m - &m;
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr int j(int n) {
|
||
|
|
if (!n)
|
||
|
|
return 0;
|
||
|
|
static const int m = n; // ref20-warning {{is a C++23 extension}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}}
|
||
|
|
return m;
|
||
|
|
}
|
||
|
|
constexpr int j0 = j(0);
|
||
|
|
|
||
|
|
constexpr int k(int n) {
|
||
|
|
if (!n)
|
||
|
|
return 0;
|
||
|
|
thread_local const int m = n; // ref20-warning {{is a C++23 extension}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}}
|
||
|
|
|
||
|
|
return m;
|
||
|
|
}
|
||
|
|
constexpr int k0 = k(0);
|
||
|
|
|
||
|
|
namespace StaticLambdas {
|
||
|
|
constexpr auto static_capture_constexpr() {
|
||
|
|
char n = 'n';
|
||
|
|
return [n] static { return n; }(); // expected23-error {{a static lambda cannot have any captures}} \
|
||
|
|
// expected20-error {{a static lambda cannot have any captures}} \
|
||
|
|
// expected20-warning {{are a C++23 extension}} \
|
||
|
|
// expected20-warning {{is a C++23 extension}} \
|
||
|
|
// ref23-error {{a static lambda cannot have any captures}} \
|
||
|
|
// ref20-error {{a static lambda cannot have any captures}} \
|
||
|
|
// ref20-warning {{are a C++23 extension}} \
|
||
|
|
// ref20-warning {{is a C++23 extension}}
|
||
|
|
}
|
||
|
|
static_assert(static_capture_constexpr()); // expected23-error {{static assertion expression is not an integral constant expression}} \
|
||
|
|
// expected20-error {{static assertion expression is not an integral constant expression}} \
|
||
|
|
// ref23-error {{static assertion expression is not an integral constant expression}} \
|
||
|
|
// ref20-error {{static assertion expression is not an integral constant expression}}
|
||
|
|
|
||
|
|
constexpr auto capture_constexpr() {
|
||
|
|
char n = 'n';
|
||
|
|
return [n] { return n; }();
|
||
|
|
}
|
||
|
|
static_assert(capture_constexpr());
|
||
|
|
}
|