1 | // No PCH: |
2 | // RUN: %clang_cc1 -pedantic -std=c++1z -include %s -verify %s |
3 | // |
4 | // With PCH: |
5 | // RUN: %clang_cc1 -pedantic -std=c++1z -emit-pch %s -o %t |
6 | // RUN: %clang_cc1 -pedantic -std=c++1z -include-pch %t -verify %s |
7 | |
8 | #ifndef HEADER |
9 | #define HEADER |
10 | |
11 | template<typename T> auto decomp(const T &t) { |
12 | auto &[a, b] = t; |
13 | return a + b; |
14 | } |
15 | |
16 | struct Q { int a, b; }; |
17 | constexpr int foo(Q &&q) { |
18 | auto &[a, b] = q; |
19 | return a * 10 + b; |
20 | } |
21 | |
22 | #else |
23 | |
24 | int arr[2]; |
25 | int k = decomp(arr); |
26 | |
27 | static_assert(foo({1, 2}) == 12); |
28 | |
29 | // expected-error@12 {{cannot decompose non-class, non-array type 'const int'}} |
30 | int z = decomp(10); // expected-note {{instantiation of}} |
31 | |
32 | #endif |
33 | |