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1 // RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s
2 struct one {
3   int a;
4   int values[]; // expected-note 4{{initialized flexible array member 'values' is here}}
5 } x = {5, {1, 2, 3}}; // expected-warning{{flexible array initialization is a GNU extension}}
6 
7 struct one x2 = { 5, 1, 2, 3 }; // expected-warning{{flexible array initialization is a GNU extension}}
8 
test()9 void test() {
10   struct one x3 = {5, {1, 2, 3}}; // expected-error{{initialization of flexible array member is not allowed}}
11   struct one x3a = { 5 };
12   struct one x3b = { .a = 5 };
13   struct one x3c = { 5, {} }; // expected-warning{{use of GNU empty initializer extension}} \
14   // expected-warning{{flexible array initialization is a GNU extension}} \
15   // expected-warning{{zero size arrays are an extension}}
16 }
17 
18 struct foo {
19   int x;
20   int y[]; // expected-note 8 {{initialized flexible array member 'y' is here}}
21 };
22 struct bar { struct foo z; }; // expected-warning {{'z' may not be nested in a struct due to flexible array member}}
23 
24 struct foo a = { 1, { 2, 3, 4 } };        // expected-warning{{flexible array initialization is a GNU extension}}
25 struct bar b = { { 1, { 2, 3, 4 } } };    // expected-error{{initialization of flexible array member is not allowed}}
26 struct bar c = { { 1, { } } };            // // expected-warning{{flexible array initialization is a GNU extension}} \
27               // expected-warning{{use of GNU empty initializer extension}} \
28               // expected-warning{{zero size arrays are an extension}}
29 struct foo d[1] = { { 1, { 2, 3, 4 } } };  // expected-warning{{'struct foo' may not be used as an array element due to flexible array member}} \
30               // expected-error{{initialization of flexible array member is not allowed}}
31 
32 struct foo desig_foo = { .y = {2, 3, 4} }; // expected-warning{{flexible array initialization is a GNU extension}}
33 struct bar desig_bar = { .z.y = { } }; // expected-warning{{use of GNU empty initializer extension}} \
34   // expected-warning{{zero size arrays are an extension}} \
35   // expected-warning{{flexible array initialization is a GNU extension}}
36 struct bar desig_bar2 = { .z.y = { 2, 3, 4} }; // expected-error{{initialization of flexible array member is not allowed}}
37 struct foo design_foo2 = { .y = 2 }; // expected-error{{flexible array requires brace-enclosed initializer}}
38 
39 struct point {
40   int x, y;
41 };
42 
43 struct polygon {
44   int numpoints;
45   struct point points[]; // expected-note{{initialized flexible array member 'points' is here}}
46 };
47 struct polygon poly = {
48   .points[2] = { 1, 2} }; // expected-error{{designator into flexible array member subobject}}
49 
50 // PR3540
51 struct X {
52   int a;
53   int b;
54   char data[];
55 };
56 
57 struct Y {
58   int a:4;
59   int b:4;
60   int c;
61   int d;
62   int e;
63   struct X xs[]; // expected-warning{{'struct X' may not be used as an array element due to flexible array member}}
64 };
65 
66 
67 // PR8217
68 struct PR8217a {
69   int  i;
70   char v[]; // expected-note 2 {{initialized flexible array member 'v' is here}}
71 };
72 
PR8217()73 void PR8217() {
74   struct PR8217a foo1 = { .i = 0, .v = "foo" }; // expected-error {{initialization of flexible array member is not allowed}}
75   struct PR8217a foo2 = { .i = 0 };
76   struct PR8217a foo3 = { .i = 0, .v = { 'b', 'a', 'r', '\0' } }; // expected-error {{initialization of flexible array member is not allowed}}
77   struct PR8217a bar;
78 }
79 
80 typedef struct PR10648 {
81  unsigned long n;
82  int v[]; // expected-note {{initialized flexible array member 'v' is here}}
83 } PR10648;
f10648()84 int f10648() {
85   return (PR10648){2, {3, 4}}.v[1]; // expected-error {{initialization of flexible array member is not allowed}}
86 }
87 
88 struct FlexWithUnnamedBitfield { int : 10; int x; int y[]; }; // expected-note {{initialized flexible array member 'y' is here}}
TestFlexWithUnnamedBitfield()89 void TestFlexWithUnnamedBitfield() {
90   struct FlexWithUnnamedBitfield x = {10, {3}}; // expected-error {{initialization of flexible array member is not allowed}}
91 }
92