1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 
3 #define NULL ((char *)0)
4 
5 #if __has_builtin(__builtin_memcpy_inline)
6 #warning defined as expected
7 // expected-warning@-1 {{defined as expected}}
8 #endif
9 
10 void test_memcpy_inline_null_src(void *ptr) {
11   __builtin_memcpy_inline(ptr, NULL, 4); // expected-warning {{null passed to a callee that requires a non-null argument}}
12 }
13 
14 void test_memcpy_inline_null_dst(void *ptr) {
15   __builtin_memcpy_inline(NULL, ptr, 4); // expected-warning {{null passed to a callee that requires a non-null argument}}
16 }
17 
18 void test_memcpy_inline_null_buffers() {
19   __builtin_memcpy_inline(NULL, NULL, 4);
20   // expected-warning@-1 {{null passed to a callee that requires a non-null argument}}
21   // expected-warning@-2 {{null passed to a callee that requires a non-null argument}}
22 }
23 
24 void test_memcpy_inline_null_buffer_is_ok_if_size_is_zero(void *ptr) {
25   __builtin_memcpy_inline(ptr, NULL, /*size */ 0);
26   __builtin_memcpy_inline(NULL, ptr, /*size */ 0);
27   __builtin_memcpy_inline(NULL, NULL, /*size */ 0);
28 }
29 
30 void test_memcpy_inline_non_constant_size(void *dst, const void *src, unsigned size) {
31   __builtin_memcpy_inline(dst, src, size); // expected-error {{argument to '__builtin_memcpy_inline' must be a constant integer}}
32 }
33 
34 template <unsigned size>
35 void test_memcpy_inline_template(void *dst, const void *src) {
36   // we do not try to evaluate size in non intantiated templates.
37   __builtin_memcpy_inline(dst, src, size);
38 }
39