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