1 // RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s 2 3 /* This test checks the introduction of struct and union types based 4 on a type specifier of the form "struct-or-union identifier" when they 5 type has not yet been declared. See C99 6.7.2.3p8. */ 6 7 typedef struct S1 { 8 union { 9 struct S2 *x; 10 struct S3 *y; 11 } u1; 12 } S1; 13 14 int test_struct_scope(S1 *s1, struct S2 *s2, struct S3 *s3) { 15 if (s1->u1.x == s2) return 1; 16 if (s1->u1.y == s3) return 1; 17 return 0; 18 } 19 20 int test_struct_scope_2(S1 *s1) { 21 struct S2 { int x; } *s2 = 0; 22 if (s1->u1.x == s2) return 1; /* expected-warning {{comparison of distinct pointer types ('struct S2 *' and 'struct S2 *')}} */ 23 return 0; 24 } 25 26 // FIXME: We do not properly implement C99 6.2.1p4, which says that 27 // the type "struct S4" declared in the function parameter list has 28 // block scope within the function definition. The problem, in this 29 // case, is that the code is ill-formed but we warn about the two S4's 30 // being incompatible (we think they are two different types). 31 int test_struct_scope_3(struct S4 * s4) { // expected-warning{{declaration of 'struct S4' will not be visible outside of this function}} 32 struct S4 { int y; } *s4_2 = 0; 33 /* if (s4 == s4_2) return 1; */ 34 return 0; 35 } 36 37 void f(struct S5 { int y; } s5); // expected-warning{{declaration of 'struct S5' will not be visible outside of this function}} 38 39 // PR clang/3312 40 struct S6 { 41 enum { BAR } e; 42 }; 43 44 void test_S6() { 45 struct S6 a; 46 a.e = BAR; 47 } 48 49 // <rdar://problem/6487669> 50 typedef struct z_foo_s { 51 struct bar_baz *baz; 52 } z_foo; 53 typedef z_foo *z_foop; 54 struct bar_baz { 55 enum { 56 SQUAT, FLAG, DICT4, DICT3, DICT2, DICT1, DICT0, HOP, CHECK4, CHECK3, CHECK2, CHECK1, DONE, BAD 57 } mode; 58 int nowrap; 59 }; 60 void 61 wizbiz_quxPoof(z) 62 z_foop z; 63 { 64 z->baz->mode = z->baz->nowrap ? HOP : SQUAT; 65 } 66
