1// RUN: %clang_cc1 -fsyntax-only -verify -pedantic -Wsign-conversion %s
2void 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-warning {{pointer type mismatch}} expected-warning {{expression result unused}}
77
78  // Make sure address-space mask ends up in the result type
79  (test0 ? (test0 ? adr2 : adr2) : nonconst_int); // expected-warning {{pointer type mismatch}} expected-warning {{expression result unused}}
80}
81
82int 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
89extern int f1(void);
90
91int 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
96int 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
103void 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