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