1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++14
// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++17 -pedantic
// [expr.new]p2 ... the invented declaration: T x init ;
// C++2b [dcl.type.auto.deduct]p2.2
// For a variable declared with a type that contains a placeholder type, T is the declared type of the variable.
void f() {
// - If the initializer is a parenthesized expression-list, the expression-list shall be a single assignmentexpression and E is the assignment-expression.
new auto('a');
new decltype(auto)('a');
// - If the initializer is a braced-init-list, it shall consist of a single brace-enclosed assignment-expression and E is the assignment-expression.
new auto{2};
new decltype(auto){2};
new auto{}; // expected-error{{new expression for type 'auto' requires a constructor argument}}
new auto({}); // expected-error{{cannot deduce actual type for 'auto' from parenthesized initializer list}}
new auto{{}}; // expected-error{{cannot deduce actual type for 'auto' from nested initializer list}}
new auto({2}); // expected-error{{cannot deduce actual type for 'auto' from parenthesized initializer list}}
new auto{{2}}; // expected-error{{cannot deduce actual type for 'auto' from nested initializer list}}
new auto{1, 2}; // expected-error{{new expression for type 'auto' contains multiple constructor arguments}}
new decltype(auto){}; // expected-error{{new expression for type 'decltype(auto)' requires a constructor argument}}
new decltype(auto)({}); // expected-error{{cannot deduce actual type for 'decltype(auto)' from parenthesized initializer list}}
new decltype(auto){{}}; // expected-error{{cannot deduce actual type for 'decltype(auto)' from nested initializer list}}
new decltype(auto)({1}); // expected-error{{cannot deduce actual type for 'decltype(auto)' from parenthesized initializer list}}
new decltype(auto){1, 2}; // expected-error{{new expression for type 'decltype(auto)' contains multiple constructor arguments}}
new decltype(auto)({1, 2}); // expected-error{{cannot deduce actual type for 'decltype(auto)' from parenthesized initializer list}}
}
|
