summaryrefslogtreecommitdiff
path: root/clang/test/Sema/pointer-addition.c
diff options
context:
space:
mode:
Diffstat (limited to 'clang/test/Sema/pointer-addition.c')
-rw-r--r--clang/test/Sema/pointer-addition.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/clang/test/Sema/pointer-addition.c b/clang/test/Sema/pointer-addition.c
new file mode 100644
index 0000000..21ce63b
--- /dev/null
+++ b/clang/test/Sema/pointer-addition.c
@@ -0,0 +1,21 @@
+// 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}}
+}