1 // RUN: %clang_cc1 -Wno-pointer-to-int-cast -fsyntax-only -verify %s 2 // PR3459 3 struct bar { 4 char n[1]; 5 }; 6 7 struct foo { 8 char name[(int)&((struct bar *)0)->n]; // expected-warning {{folded to constant}} 9 char name2[(int)&((struct bar *)0)->n - 1]; // expected-error {{array size is negative}} 10 }; 11 12 // PR3430 13 struct s { 14 struct st { 15 int v; 16 } *ts; 17 }; 18 19 struct st; 20 foo()21int foo() { 22 struct st *f; 23 return f->v + f[0].v; 24 } 25 26 // PR3642, PR3671 27 struct pppoe_tag { 28 short tag_type; 29 char tag_data[]; 30 }; 31 struct datatag { 32 struct pppoe_tag hdr; //expected-warning{{field 'hdr' with variable sized type 'struct pppoe_tag' not at the end of a struct or class is a GNU extension}} 33 char data; 34 }; 35 36 37 // PR4092 38 struct s0 { 39 char a; // expected-note {{previous declaration is here}} 40 char a; // expected-error {{duplicate member 'a'}} 41 }; 42 f0(void)43struct s0 f0(void) {} 44 45 // <rdar://problem/8177927> - This previously triggered an assertion failure. 46 struct x0 { 47 unsigned int x1; 48 }; 49 50 // rdar://problem/9150338 51 static struct test1 { // expected-warning {{'static' ignored on this declaration}} 52 int x; 53 }; 54 const struct test2 { // expected-warning {{'const' ignored on this declaration}} 55 int x; 56 }; 57 inline struct test3 { // expected-error {{'inline' can only appear on functions}} 58 int x; 59 }; 60 61 struct hiding_1 {}; 62 struct hiding_2 {}; test_hiding()63void test_hiding() { 64 struct hiding_1 *hiding_1(); 65 extern struct hiding_2 *hiding_2; 66 struct hiding_1 *p = hiding_1(); 67 struct hiding_2 *q = hiding_2; 68 } 69 70 struct PreserveAttributes {}; 71 typedef struct __attribute__((noreturn)) PreserveAttributes PreserveAttributes_t; // expected-warning {{'noreturn' attribute only applies to functions and methods}} 72 73 // PR46255 74 struct FlexibleArrayMem { 75 int a; 76 int b[]; 77 }; 78 79 struct FollowedByNamed { 80 struct FlexibleArrayMem a; // expected-warning {{field 'a' with variable sized type 'struct FlexibleArrayMem' not at the end of a struct or class is a GNU extension}} 81 int i; 82 }; 83 84 struct FollowedByUnNamed { 85 struct FlexibleArrayMem a; // expected-warning {{field 'a' with variable sized type 'struct FlexibleArrayMem' not at the end of a struct or class is a GNU extension}} 86 struct { 87 int i; 88 }; 89 }; 90 91 struct InAnonymous { 92 struct { // expected-warning-re {{field '' with variable sized type 'struct InAnonymous::(anonymous at {{.+}})' not at the end of a struct or class is a GNU extension}} 93 94 struct FlexibleArrayMem a; 95 }; 96 int i; 97 }; 98 struct InAnonymousFollowedByAnon { 99 struct { // expected-warning-re {{field '' with variable sized type 'struct InAnonymousFollowedByAnon::(anonymous at {{.+}})' not at the end of a struct or class is a GNU extension}} 100 101 struct FlexibleArrayMem a; 102 }; 103 struct { 104 int i; 105 }; 106 }; 107 108 // This is the behavior in C++ as well, so making sure we reproduce it here. 109 struct InAnonymousFollowedByEmpty { 110 struct FlexibleArrayMem a; // expected-warning {{field 'a' with variable sized type 'struct FlexibleArrayMem' not at the end of a struct or class is a GNU extension}} 111 struct {}; 112 }; 113