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// RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s
/* This test checks the introduction of struct and union types based
on a type specifier of the form "struct-or-union identifier" when they
type has not yet been declared. See C99 6.7.2.3p8. */
typedef struct S1 {
union {
struct S2 *x;
struct S3 *y;
} u1;
} S1;
int test_struct_scope(S1 *s1, struct S2 *s2, struct S3 *s3) {
if (s1->u1.x == s2) return 1;
if (s1->u1.y == s3) return 1;
return 0;
}
int test_struct_scope_2(S1 *s1) {
struct S2 { int x; } *s2 = 0;
if (s1->u1.x == s2) return 1; /* expected-warning {{comparison of distinct pointer types ('struct S2 *' and 'struct S2 *')}} */
return 0;
}
// FIXME: We do not properly implement C99 6.2.1p4, which says that
// the type "struct S4" declared in the function parameter list has
// block scope within the function definition. The problem, in this
// case, is that the code is ill-formed but we warn about the two S4's
// being incompatible (we think they are two different types).
int test_struct_scope_3(struct S4 * s4) { // expected-warning{{declaration of 'struct S4' will not be visible outside of this function}}
struct S4 { int y; } *s4_2 = 0;
/* if (s4 == s4_2) return 1; */
return 0;
}
void f(struct S5 { int y; } s5); // expected-warning{{declaration of 'struct S5' will not be visible outside of this function}}
// PR clang/3312
struct S6 {
enum { BAR } e;
};
void test_S6() {
struct S6 a;
a.e = BAR;
}
// <rdar://problem/6487669>
typedef struct z_foo_s {
struct bar_baz *baz;
} z_foo;
typedef z_foo *z_foop;
struct bar_baz {
enum {
SQUAT, FLAG, DICT4, DICT3, DICT2, DICT1, DICT0, HOP, CHECK4, CHECK3, CHECK2, CHECK1, DONE, BAD
} mode;
int nowrap;
};
void
wizbiz_quxPoof(z)
z_foop z;
{
z->baz->mode = z->baz->nowrap ? HOP : SQUAT;
}
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