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