// RUN: %clang_cc1 -fsyntax-only -Wno-pointer-to-int-cast -verify -pedantic -Wsign-conversion %s
void foo(void) {
*(0 ? (double *)0 : (void *)0) = 0;
// FIXME: GCC doesn't consider the following two statements to be errors.
*(0 ? (double *)0 : (void *)(int *)0) = 0; /* expected-error {{incomplete type 'void' is not assignable}}
expected-warning {{ISO C does not allow indirection on operand of type 'void *'}} */
*(0 ? (double *)0 : (void *)(double *)0) = 0; /* expected-error {{incomplete type 'void' is not assignable}}
expected-warning {{ISO C does not allow indirection on operand of type 'void *'}} */
*(0 ? (double *)0 : (int *)(void *)0) = 0; /* expected-error {{incomplete type 'void' is not assignable}}
expected-warning {{pointer type mismatch ('double *' and 'int *')}}
expected-warning {{ISO C does not allow indirection on operand of type 'void *'}} */
*(0 ? (double *)0 : (double *)(void *)0) = 0;
*((void *) 0) = 0; /* expected-error {{incomplete type 'void' is not assignable}}
expected-warning {{ISO C does not allow indirection on operand of type 'void *'}} */
double *dp;
int *ip;
void *vp;
dp = vp;
vp = dp;
ip = dp; // expected-warning {{incompatible pointer types assigning to 'int *' from 'double *'}}
dp = ip; // expected-warning {{incompatible pointer types assigning to 'double *' from 'int *'}}
dp = 0 ? (double *)0 : (void *)0;
vp = 0 ? (double *)0 : (void *)0;
ip = 0 ? (double *)0 : (void *)0; // expected-warning {{incompatible pointer types assigning to 'int *' from 'double *'}}
const int *cip;
vp = (0 ? vp : cip); // expected-warning {{discards qualifiers}}
vp = (0 ? cip : vp); // expected-warning {{discards qualifiers}}
int i = 2;
int (*pf)[2];
int (*pv)[i];
pf = (i ? pf : pv);
enum {xxx,yyy,zzz} e, *ee;
short x;
ee = ee ? &x : ee ? &i : &e; // expected-warning {{pointer type mismatch}}
typedef void *asdf;
*(0 ? (asdf) 0 : &x) = 10;
unsigned long test0 = 5;
test0 = test0 ? (long) test0 : test0; // expected-warning {{operand of ? changes signedness: 'long' to 'unsigned long'}}
test0 = test0 ? (int) test0 : test0; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}}
test0 = test0 ? (short) test0 : test0; // expected-warning {{operand of ? changes signedness: 'short' to 'unsigned long'}}
test0 = test0 ? test0 : (long) test0; // expected-warning {{operand of ? changes signedness: 'long' to 'unsigned long'}}
test0 = test0 ? test0 : (int) test0; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}}
test0 = test0 ? test0 : (short) test0; // expected-warning {{operand of ? changes signedness: 'short' to 'unsigned long'}}
test0 = test0 ? test0 : (long) 10;
test0 = test0 ? test0 : (int) 10;
test0 = test0 ? test0 : (short) 10;
test0 = test0 ? (long) 10 : test0;
test0 = test0 ? (int) 10 : test0;
test0 = test0 ? (short) 10 : test0;
int test1;
enum Enum { EVal };
test0 = test0 ? EVal : test0;
test1 = test0 ? EVal : (int) test0;
test0 = test0 ?
(unsigned) EVal
: (int) test0; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}}
test0 = test0 ? EVal : test1; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}}
test0 = test0 ? test1 : EVal; // expected-warning {{operand of ? changes signedness: 'int' to 'unsigned long'}}
const int *const_int;
int *nonconst_int;
*(test0 ? const_int : nonconst_int) = 42; // expected-error {{read-only variable is not assignable}}
*(test0 ? nonconst_int : const_int) = 42; // expected-error {{read-only variable is not assignable}}
// The composite type here should be "int (*)[12]", fine for the sizeof
int (*incomplete)[];
int (*complete)[12];
sizeof(*(test0 ? incomplete : complete)); // expected-warning {{expression result unused}}
sizeof(*(test0 ? complete : incomplete)); // expected-warning {{expression result unused}}
int __attribute__((address_space(2))) *adr2;
int __attribute__((address_space(3))) *adr3;
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}}
// Make sure address-space mask ends up in the result type
(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}}
}
int Postgresql(void) {
char x;
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}}
expected-warning {{comparison of address of 'x' not equal to a null pointer is always true}} */
}
#define nil ((void*) 0)
extern int f1(void);
int f0(int a) {
// GCC considers this a warning.
return a ? f1() : nil; // expected-warning {{pointer/integer type mismatch in conditional expression ('int' and 'void *')}} expected-error {{incompatible pointer to integer conversion returning 'void *' from a function with result type 'int'}}
}
int f2(int x) {
// We can suppress this because the immediate context wants an int.
return (x != 0) ? 0U : x;
}
#define NULL (void*)0
void PR9236(void) {
struct A {int i;} A1;
(void)(1 ? A1 : NULL); // expected-error{{non-pointer operand type 'struct A' incompatible with NULL}}
(void)(1 ? NULL : A1); // expected-error{{non-pointer operand type 'struct A' incompatible with NULL}}
(void)(1 ? 0 : A1); // expected-error{{incompatible operand types}}
(void)(1 ? (void*)0 : A1); // expected-error{{incompatible operand types}}
(void)(1 ? A1: (void*)0); // expected-error{{incompatible operand types}}
(void)(1 ? A1 : (NULL)); // expected-error{{non-pointer operand type 'struct A' incompatible with NULL}}
}
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