1 // Test without serialization:
2 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu++17 \
3 // RUN:            -ast-dump %s -ast-dump-filter Test \
4 // RUN: | FileCheck --strict-whitespace --match-full-lines %s
5 //
6 // Test with serialization:
7 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu++17 -emit-pch -o %t %s
8 // RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu++17 \
9 // RUN:           -include-pch %t -ast-dump-all -ast-dump-filter Test /dev/null \
10 // RUN: | sed -e "s/ <undeserialized declarations>//" -e "s/ imported//" \
11 // RUN: | FileCheck --strict-whitespace --match-full-lines %s
12 
13 union U0 {
14   int i = 42;
15   float f;
16 };
17 
18 union U1 {
19   union Uinner {
20     int i;
21     float f = 3.1415f;
22   } uinner;
23 };
24 
25 union U2 {
26   union Uinner {
27     double d;
28     int arr[2] = {1, 2};
29   } uinner;
30 };
31 
32 union U3 {
33   union Uinner {
34     double d = 3.1415;
35     int arr[2];
36   } uinner;
37   float f;
38 };
39 
40 void Test() {
41   constexpr U0 u0{};
42   // CHECK:  | `-VarDecl {{.*}} <col:{{.*}}, col:{{.*}}> col:{{.*}} u0 'const U0' constexpr listinit
43   // CHECK-NEXT:  |   |-value: Union .i Int 42
44 
45   constexpr U1 u1{};
46   // CHECK:  | `-VarDecl {{.*}} <col:{{.*}}, col:{{.*}}> col:{{.*}} u1 'const U1' constexpr listinit
47   // CHECK-NEXT:  |   |-value: Union .uinner Union .f Float 3.141500e+00
48 
49   constexpr U2 u2{};
50   // CHECK:  | `-VarDecl {{.*}} <col:{{.*}}, col:{{.*}}> col:{{.*}} u2 'const U2' constexpr listinit
51   // CHECK-NEXT:  |   |-value: Union .uinner
52   // CHECK-NEXT:  |   | `-Union .arr
53   // CHECK-NEXT:  |   |   `-Array size=2
54   // CHECK-NEXT:  |   |     `-elements: Int 1, Int 2
55 
56   constexpr U3 u3a = {.f = 3.1415};
57   // CHECK:  | `-VarDecl {{.*}} <col:{{.*}}, col:{{.*}}> col:{{.*}} u3a 'const U3' constexpr cinit
58   // CHECK-NEXT:  |   |-value: Union .f Float 3.141500e+00
59 
60   constexpr U3 u3b = {.uinner = {}};
61   // CHECK:    `-VarDecl {{.*}} <col:{{.*}}, col:{{.*}}> col:{{.*}} u3b 'const U3' constexpr cinit
62   // CHECK-NEXT:      |-value: Union .uinner Union .d Float 3.141500e+00
63 }
64