1 // RUN: %clang_cc1 -std=c99 -Wmissing-field-initializers -Wmissing-braces -verify %s
2
3 // Tests that using {0} in struct initialization or assignment is supported
4 struct foo { int x; int y; };
5 struct bar { struct foo a; struct foo b; };
6 struct A { int a; };
7 struct B { struct A a; };
8 struct C { struct B b; };
9 struct D { struct C c; int n; };
10 struct E { short e; };
11 struct F { struct E e; int n; };
12
main(void)13 int main(void)
14 {
15 struct foo f = { 0 }; // no-warning
16 struct foo g = { 9 }; // expected-warning {{missing field 'y' initializer}}
17 struct foo h = { 9, 9 }; // no-warning
18 struct bar i = { 0 }; // no-warning
19 struct bar j = { 0, 0 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'b' initializer}}
20 struct bar k = { { 9, 9 }, { 9, 9 } }; // no-warning
21 struct bar l = { { 9, 9 }, { 0 } }; // no-warning
22 struct bar m = { { 0 }, { 0 } }; // no-warning
23 struct bar n = { { 0 }, { 9, 9 } }; // no-warning
24 struct bar o = { { 9 }, { 9, 9 } }; // expected-warning {{missing field 'y' initializer}}
25 struct C p = { 0 }; // no-warning
26 struct C q = { 9 }; // warning suppressed for struct with single element
27 struct D r = { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
28 struct F s = { 0 }; // no-warning
29 struct F t = { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
30
31 f = (struct foo ) { 0 }; // no-warning
32 g = (struct foo ) { 9 }; // expected-warning {{missing field 'y' initializer}}
33 h = (struct foo ) { 9, 9 }; // no-warning
34 i = (struct bar) { 0 }; // no-warning
35 j = (struct bar) { 0, 0 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'b' initializer}}
36 k = (struct bar) { { 9, 9 }, { 9, 9 } }; // no-warning
37 l = (struct bar) { { 9, 9 }, { 0 } }; // no-warning
38 m = (struct bar) { { 0 }, { 0 } }; // no-warning
39 n = (struct bar) { { 0 }, { 9, 9 } }; // no-warning
40 o = (struct bar) { { 9 }, { 9, 9 } }; // expected-warning {{missing field 'y' initializer}}
41 p = (struct C) { 0 }; // no-warning
42 q = (struct C) { 9 }; // warning suppressed for struct with single element
43 r = (struct D) { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
44 s = (struct F) { 0 }; // no-warning
45 t = (struct F) { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
46
47 return 0;
48 }
49