1 // RUN: %clang_cc1 -std=c++2a -include %s -verify %s
2 // RUN: %clang_cc1 -std=c++2a -emit-pch %s -o %t
3 // RUN: %clang_cc1 -std=c++2a -include-pch %t -verify %s -DPCH
4 // RUN: %clang_cc1 -std=c++2a -emit-pch -fpch-instantiate-templates %s -o %t
5 // RUN: %clang_cc1 -std=c++2a -include-pch %t -verify %s -DPCH
6 
7 #ifndef HEADER
8 #define HEADER
9 
10 struct S {
11   unsigned int n : 5 = 49; // expected-warning {{changes value}}
12 };
13 
14 int a;
15 template<bool B> struct T {
16   int m : B ? 8 : a = 42;
17 };
18 
19 #else
20 
21 // expected-error@-5 {{constant expression}} expected-note@-5 {{cannot modify}}
22 
23 static_assert(S().n == 17);
24 static_assert(T<true>().m == 0);
25 int q = T<false>().m; // expected-note {{instantiation of}}
26 
27 #endif
28