1 | // RUN: %clang_cc1 -fsyntax-only -verify -pedantic -Wsign-conversion %s |
2 | void foo() { |
3 | *(0 ? (double *)0 : (void *)0) = 0; |
4 | // FIXME: GCC doesn't consider the following two statements to be errors. |
5 | *(0 ? (double *)0 : (void *)(int *)0) = 0; // expected-error {{incomplete type 'void' is not assignable}} |
6 | *(0 ? (double *)0 : (void *)(double *)0) = 0; // expected-error {{incomplete type 'void' is not assignable}} |
7 | *(0 ? (double *)0 : (int *)(void *)0) = 0; // expected-error {{incomplete type 'void' is not assignable}} expected-warning {{pointer type mismatch ('double *' and 'int *')}} |
8 | *(0 ? (double *)0 : (double *)(void *)0) = 0; |
9 | *((void *) 0) = 0; // expected-error {{incomplete type 'void' is not assignable}} |
10 | double *dp; |
11 | int *ip; |
12 | void *vp; |
13 | |
14 | dp = vp; |
15 | vp = dp; |
16 | ip = dp; // expected-warning {{incompatible pointer types assigning to 'int *' from 'double *'}} |
17 | dp = ip; // expected-warning {{incompatible pointer types assigning to 'double *' from 'int *'}} |
18 | dp = 0 ? (double *)0 : (void *)0; |
19 | vp = 0 ? (double *)0 : (void *)0; |
20 | ip = 0 ? (double *)0 : (void *)0; // expected-warning {{incompatible pointer types assigning to 'int *' from 'double *'}} |
21 | |
22 | const int *cip; |
23 | vp = (0 ? vp : cip); // expected-warning {{discards qualifiers}} |
24 | vp = (0 ? cip : vp); // expected-warning {{discards qualifiers}} |
25 | |
26 | int i = 2; |
27 | int (*pf)[2]; |
28 | int (*pv)[i]; |
29 | pf = (i ? pf : pv); |
30 | |
31 | enum {xxx,yyy,zzz} e, *ee; |
32 | short x; |
33 | ee = ee ? &x : ee ? &i : &e; // expected-warning {{pointer type mismatch}} |
34 | |
35 | typedef void *asdf; |
36 | *(0 ? (asdf) 0 : &x) = 10; |
37 | |
38 | unsigned long test0 = 5; |
39 | test0 = test0 ? (long) test0 : test0; // expected-warning {{operand of ? changes signedness: 'long' to 'unsigned long'}} |
40 | test0 = test0 ? (int) test0 : test0; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}} |
41 | test0 = test0 ? (short) test0 : test0; // expected-warning {{operand of ? changes signedness: 'short' to 'unsigned long'}} |
42 | test0 = test0 ? test0 : (long) test0; // expected-warning {{operand of ? changes signedness: 'long' to 'unsigned long'}} |
43 | test0 = test0 ? test0 : (int) test0; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}} |
44 | test0 = test0 ? test0 : (short) test0; // expected-warning {{operand of ? changes signedness: 'short' to 'unsigned long'}} |
45 | test0 = test0 ? test0 : (long) 10; |
46 | test0 = test0 ? test0 : (int) 10; |
47 | test0 = test0 ? test0 : (short) 10; |
48 | test0 = test0 ? (long) 10 : test0; |
49 | test0 = test0 ? (int) 10 : test0; |
50 | test0 = test0 ? (short) 10 : test0; |
51 | |
52 | int test1; |
53 | enum Enum { EVal }; |
54 | test0 = test0 ? EVal : test0; |
55 | test1 = test0 ? EVal : (int) test0; |
56 | test0 = test0 ? |
57 | (unsigned) EVal |
58 | : (int) test0; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}} |
59 | |
60 | test0 = test0 ? EVal : test1; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}} |
61 | test0 = test0 ? test1 : EVal; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}} |
62 | |
63 | const int *const_int; |
64 | int *nonconst_int; |
65 | *(test0 ? const_int : nonconst_int) = 42; // expected-error {{read-only variable is not assignable}} |
66 | *(test0 ? nonconst_int : const_int) = 42; // expected-error {{read-only variable is not assignable}} |
67 | |
68 | // The composite type here should be "int (*)[12]", fine for the sizeof |
69 | int (*incomplete)[]; |
70 | int (*complete)[12]; |
71 | sizeof(*(test0 ? incomplete : complete)); // expected-warning {{expression result unused}} |
72 | sizeof(*(test0 ? complete : incomplete)); // expected-warning {{expression result unused}} |
73 | |
74 | int __attribute__((address_space(2))) *adr2; |
75 | int __attribute__((address_space(3))) *adr3; |
76 | test0 ? adr2 : adr3; // expected-error{{conditional operator with the second and third operands of type ('__attribute__((address_space(2))) int *' and '__attribute__((address_space(3))) int *') which are pointers to non-overlapping address spaces}} |
77 | |
78 | // Make sure address-space mask ends up in the result type |
79 | (test0 ? (test0 ? adr2 : adr2) : nonconst_int); // expected-error{{conditional operator with the second and third operands of type ('__attribute__((address_space(2))) int *' and 'int *') which are pointers to non-overlapping address spaces}} |
80 | } |
81 | |
82 | int Postgresql() { |
83 | char x; |
84 | return ((((&x) != ((void *) 0)) ? (*(&x) = ((char) 1)) : (void) ((void *) 0)), (unsigned long) ((void *) 0)); // expected-warning {{C99 forbids conditional expressions with only one void side}} |
85 | } |
86 | |
87 | #define nil ((void*) 0) |
88 | |
89 | extern int f1(void); |
90 | |
91 | int f0(int a) { |
92 | // GCC considers this a warning. |
93 | return a ? f1() : nil; // expected-warning {{pointer/integer type mismatch in conditional expression ('int' and 'void *')}} expected-warning {{incompatible pointer to integer conversion returning 'void *' from a function with result type 'int'}} |
94 | } |
95 | |
96 | int f2(int x) { |
97 | // We can suppress this because the immediate context wants an int. |
98 | return (x != 0) ? 0U : x; |
99 | } |
100 | |
101 | #define NULL (void*)0 |
102 | |
103 | void PR9236() { |
104 | struct A {int i;} A1; |
105 | (void)(1 ? A1 : NULL); // expected-error{{non-pointer operand type 'struct A' incompatible with NULL}} |
106 | (void)(1 ? NULL : A1); // expected-error{{non-pointer operand type 'struct A' incompatible with NULL}} |
107 | (void)(1 ? 0 : A1); // expected-error{{incompatible operand types}} |
108 | (void)(1 ? (void*)0 : A1); // expected-error{{incompatible operand types}} |
109 | (void)(1 ? A1: (void*)0); // expected-error{{incompatible operand types}} |
110 | (void)(1 ? A1 : (NULL)); // expected-error{{non-pointer operand type 'struct A' incompatible with NULL}} |
111 | } |
112 | |
113 | |