50 lines
2.0 KiB
C++
50 lines
2.0 KiB
C++
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// RUN: %clang_cc1 -verify -std=c++2a -pedantic-errors %s
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// RUN: cp %s %t
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// RUN: not %clang_cc1 -x c++ -std=c++2a -fixit %t
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// RUN: %clang_cc1 -Wall -pedantic-errors -x c++ -std=c++2a %t
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// RUN: cat %t | FileCheck %s
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/* This is a test of the various code modification hints that only
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apply in C++2a. */
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template<typename ...T> void init_capture_pack(T ...a) {
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[x... = a]{}; // expected-error {{must appear before the name}}
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[x = a...]{}; // expected-error {{must appear before the name}}
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[...&x = a]{}; // expected-error {{must appear before the name}}
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[...a]{}; // expected-error {{must appear after the name}}
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[&...a]{}; // expected-error {{must appear after the name}}
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[...&a]{}; // expected-error {{must appear after the name}}
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}
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namespace constinit_mismatch {
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extern thread_local constinit int a; // expected-note {{declared constinit here}}
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thread_local int a = 123; // expected-error {{'constinit' specifier missing on initializing declaration of 'a'}}
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// CHECK: {{^}} constinit thread_local int a = 123;
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int b = 123; // expected-note {{add the 'constinit' specifier}}
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extern constinit int b; // expected-error {{'constinit' specifier added after initialization of variable}}
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// CHECK: {{^}} extern int b;
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template<typename> struct X {
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template<int> static constinit int n; // expected-note {{constinit}}
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};
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template<typename T> template<int N>
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int X<T>::n = 123; // expected-error {{missing}}
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// CHECK: {{^}} constinit int X<T>::n = 123;
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#define ABSL_CONST_INIT [[clang::require_constant_initialization]]
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extern constinit int c; // expected-note {{constinit}}
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int c; // expected-error {{missing}}
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// CHECK: {{^}} ABSL_CONST_INIT int c;
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#define MY_CONST_INIT constinit
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extern constinit int d; // expected-note {{constinit}}
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int d; // expected-error {{missing}}
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// CHECK: {{^}} MY_CONST_INIT int d;
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#undef MY_CONST_INIT
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extern constinit int e; // expected-note {{constinit}}
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int e; // expected-error {{missing}}
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// CHECK: {{^}} ABSL_CONST_INIT int e;
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#undef ABSL_CONST_INIT
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}
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