Support arithmetic on pointer-to-function types as a GNU
extension. Addresses clang PR/3371.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62823 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/pointer-addition.c b/test/Sema/pointer-addition.c
index 95f364f..81a1dc0 100644
--- a/test/Sema/pointer-addition.c
+++ b/test/Sema/pointer-addition.c
@@ -2,13 +2,18 @@
typedef struct S S; // expected-note{{forward declaration of 'struct S'}}
void a(S* b, void* c) {
+ void (*fp)(int) = 0;
b++; // expected-error {{arithmetic on pointer to incomplete type}}
b += 1; // expected-error {{arithmetic on pointer to incomplete type}}
c++; // expected-warning {{use of GNU void* extension}}
c += 1; // expected-warning {{use of GNU void* extension}}
+ c--; // expected-warning {{use of GNU void* extension}}
+ c -= 1; // expected-warning {{use of GNU void* extension}}
b = 1+b; // expected-error {{arithmetic on pointer to incomplete type}}
/* The next couple tests are only pedantic warnings in gcc */
void (*d)(S*,void*) = a;
- d += 1; // expected-error {{arithmetic on pointer to function type}}}
- d++; // expected-error {{arithmetic on pointer to function type}}}
+ d += 1; // expected-warning {{arithmetic on pointer to function type 'void (*)(S *, void *)' is a GNU extension}}
+ d++; // expected-warning {{arithmetic on pointer to function type 'void (*)(S *, void *)' is a GNU extension}}}
+ d--; // expected-warning {{arithmetic on pointer to function type 'void (*)(S *, void *)' is a GNU extension}}
+ d -= 1; // expected-warning {{arithmetic on pointer to function type 'void (*)(S *, void *)' is a GNU extension}}
}