| Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 1 | // RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic -std=c11 |
| Eli Friedman | d72d16e | 2008-05-18 18:08:51 +0000 | [diff] [blame] | 2 | |
| Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 3 | typedef struct S S; // expected-note 4 {{forward declaration of 'struct S'}} |
| 4 | extern _Atomic(S*) e; |
| Eli Friedman | d72d16e | 2008-05-18 18:08:51 +0000 | [diff] [blame] | 5 | void a(S* b, void* c) { |
| Douglas Gregor | c983b86 | 2009-01-23 00:36:41 +0000 | [diff] [blame] | 6 | void (*fp)(int) = 0; |
| Chandler Carruth | 13b21be | 2011-06-27 08:02:19 +0000 | [diff] [blame] | 7 | b++; // expected-error {{arithmetic on a pointer to an incomplete type}} |
| 8 | b += 1; // expected-error {{arithmetic on a pointer to an incomplete type}} |
| 9 | c++; // expected-warning {{arithmetic on a pointer to void is a GNU extension}} |
| 10 | c += 1; // expected-warning {{arithmetic on a pointer to void is a GNU extension}} |
| 11 | c--; // expected-warning {{arithmetic on a pointer to void is a GNU extension}} |
| 12 | c -= 1; // expected-warning {{arithmetic on a pointer to void is a GNU extension}} |
| Chandler Carruth | 6628969 | 2011-06-27 16:32:27 +0000 | [diff] [blame] | 13 | (void) c[1]; // expected-warning {{subscript of a pointer to void is a GNU extension}} |
| Chandler Carruth | 13b21be | 2011-06-27 08:02:19 +0000 | [diff] [blame] | 14 | b = 1+b; // expected-error {{arithmetic on a pointer to an incomplete type}} |
| Eli Friedman | d72d16e | 2008-05-18 18:08:51 +0000 | [diff] [blame] | 15 | /* The next couple tests are only pedantic warnings in gcc */ |
| 16 | void (*d)(S*,void*) = a; |
| Chandler Carruth | 13b21be | 2011-06-27 08:02:19 +0000 | [diff] [blame] | 17 | d += 1; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}} |
| 18 | d++; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}} |
| 19 | d--; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}} |
| 20 | d -= 1; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}} |
| 21 | (void)(1 + d); // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}} |
| Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 22 | e++; // expected-error {{arithmetic on a pointer to an incomplete type}} |
| Eli Friedman | d72d16e | 2008-05-18 18:08:51 +0000 | [diff] [blame] | 23 | } |