--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pointer-arith-3.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,41 @@
+/* Test diagnostics for arithmetic on void and function pointers.
+   Test with -pedantic.  */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do compile } */
+/* { dg-options "-pedantic" } */
+
+void *p;
+void (*f)(void);
+
+void
+g (void)
+{
+  p + 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  p + 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  0 + p; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  1 + p; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  p - 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  p - 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  p += 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  p += 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  p -= 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  p -= 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
+  f + 0; /* { dg-warning "pointer to a function used in arithmetic" } */
+  f + 1; /* { dg-warning "pointer to a function used in arithmetic" } */
+  0 + f; /* { dg-warning "pointer to a function used in arithmetic" } */
+  1 + f; /* { dg-warning "pointer to a function used in arithmetic" } */
+  f - 0; /* { dg-warning "pointer to a function used in arithmetic" } */
+  f - 1; /* { dg-warning "pointer to a function used in arithmetic" } */
+  f += 0; /* { dg-warning "pointer to a function used in arithmetic" } */
+  f += 1; /* { dg-warning "pointer to a function used in arithmetic" } */
+  f -= 0; /* { dg-warning "pointer to a function used in arithmetic" } */
+  f -= 1; /* { dg-warning "pointer to a function used in arithmetic" } */
+  p[0]; /* { dg-warning "dereferencing 'void \\*' pointer" } */
+  /* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } .-1 } */
+  0[p]; /* { dg-warning "dereferencing 'void \\*' pointer" } */
+  /* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } .-1 } */
+  f[0]; /* { dg-error "subscripted value is pointer to function" } */
+  0[f]; /* { dg-error "subscripted value is pointer to function" } */
+  p - p; /* { dg-warning "pointer of type 'void \\*' used in subtraction" } */
+  f - f; /* { dg-warning "pointer to a function used in subtraction" } */
+}