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