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1// RUN: %clang_cc1 -fsyntax-only -pedantic -Wno-strict-prototypes -verify %s2 3/* This test checks the introduction of struct and union types based4 on a type specifier of the form "struct-or-union identifier" when they5 type has not yet been declared. See C99 6.7.2.3p8. */6 7typedef struct S1 {8 union {9 struct S2 *x;10 struct S3 *y;11 } u1;12} S1;13 14int 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 20int 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 that27// the type "struct S4" declared in the function parameter list has28// block scope within the function definition. The problem, in this29// case, is that the code is ill-formed but we warn about the two S4's30// being incompatible (we think they are two different types).31int 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 37void f(struct S5 { int y; } s5); // expected-warning{{declaration of 'struct S5' will not be visible outside of this function}}38 39// PR clang/331240struct S6 {41 enum { BAR } e;42};43 44void test_S6(void) {45 struct S6 a;46 a.e = BAR;47}48 49typedef struct z_foo_s {50 struct bar_baz *baz;51} z_foo;52typedef z_foo *z_foop;53struct bar_baz {54 enum {55 SQUAT, FLAG, DICT4, DICT3, DICT2, DICT1, DICT0, HOP, CHECK4, CHECK3, CHECK2, CHECK1, DONE, BAD56 } mode;57 int nowrap;58};59void60wizbiz_quxPoof(z)61 z_foop z;62{63 z->baz->mode = z->baz->nowrap ? HOP : SQUAT;64}65