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// RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic
typedef struct S S; // expected-note 3 {{forward declaration of 'struct S'}}
void a(S* b, void* c) {
void (*fp)(int) = 0;
b++; // expected-error {{arithmetic on a pointer to an incomplete type}}
b += 1; // expected-error {{arithmetic on a pointer to an incomplete type}}
c++; // expected-warning {{arithmetic on a pointer to void is a GNU extension}}
c += 1; // expected-warning {{arithmetic on a pointer to void is a GNU extension}}
c--; // expected-warning {{arithmetic on a pointer to void is a GNU extension}}
c -= 1; // expected-warning {{arithmetic on a pointer to void is a GNU extension}}
(void) c[1]; // expected-warning {{subscript of a pointer to void is a GNU extension}}
b = 1+b; // expected-error {{arithmetic on a pointer to an incomplete type}}
/* The next couple tests are only pedantic warnings in gcc */
void (*d)(S*,void*) = a;
d += 1; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}}
d++; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}}
d--; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}}
d -= 1; // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}}
(void)(1 + d); // expected-warning {{arithmetic on a pointer to the function type 'void (S *, void *)' is a GNU extension}}
}
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