llvm/clang/test/Sema/attr-nonnull.c

// RUN: %clang_cc1 %s -verify -fsyntax-only
// RUN: %clang_cc1 %s -verify -fsyntax-only -fexperimental-new-constant-interpreter

void f1(int *a1, int *a2, int *a3, int *a4, int *a5, int *a6, int *a7,
        int *a8, int *a9, int *a10, int *a11, int *a12, int *a13, int *a14,
        int *a15, int *a16) __attribute__((nonnull(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)));

void f2(void) __attribute__((nonnull())); // expected-warning {{'nonnull' attribute applied to function with no pointer arguments}}