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 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 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; 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}} 89 void TestFlexWithUnnamedBitfield() { 90 struct FlexWithUnnamedBitfield x = {10, {3}}; // expected-error {{initialization of flexible array member is not allowed}} 91 } 92
