clang/test/Sema/builtins-memcpy-inline.cpp

   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_invalid_arg_types() {
  11   __builtin_memcpy_inline(1, 2, 3); // expected-error {{cannot initialize a parameter of type 'void *' with an rvalue of type 'int'}}
  12 }
  13
  14 void test_memcpy_inline_null_src(void *ptr) {
  15   __builtin_memcpy_inline(ptr, NULL, 4); // expected-warning {{null passed to a callee that requires a non-null argument}}
  16 }
  17
  18 void test_memcpy_inline_null_dst(void *ptr) {
  19   __builtin_memcpy_inline(NULL, ptr, 4); // expected-warning {{null passed to a callee that requires a non-null argument}}
  20 }
  21
  22 void test_memcpy_inline_null_buffers() {
  23   __builtin_memcpy_inline(NULL, NULL, 4);
  24   // expected-warning@-1 {{null passed to a callee that requires a non-null argument}}
  25   // expected-warning@-2 {{null passed to a callee that requires a non-null argument}}
  26 }
  27
  28 void test_memcpy_inline_null_buffer_is_ok_if_size_is_zero(void *ptr) {
  29   __builtin_memcpy_inline(ptr, NULL, /*size */ 0);
  30   __builtin_memcpy_inline(NULL, ptr, /*size */ 0);
  31   __builtin_memcpy_inline(NULL, NULL, /*size */ 0);
  32 }
  33
  34 void test_memcpy_inline_non_constant_size(void *dst, const void *src, unsigned size) {
  35   __builtin_memcpy_inline(dst, src, size); // expected-error {{argument to '__builtin_memcpy_inline' must be a constant integer}}
  36 }
  37
  38 template <unsigned size>
  39 void test_memcpy_inline_template(void *dst, const void *src) {
  40   // we do not try to evaluate size in non intantiated templates.
  41   __builtin_memcpy_inline(dst, src, size);
  42 }
  43
  44 void test_memcpy_inline_implicit_conversion(void *ptr) {
  45   char a[5];
  46   __builtin_memcpy_inline(ptr, a, 5);
  47   __builtin_memcpy_inline(a, ptr, 5);
  48 }
  49
  50 void test_memcpy_inline_num_args(void *dst, void *src) {
  51  __builtin_memcpy_inline(); // expected-error {{too few arguments to function call}}
  52  __builtin_memcpy_inline(dst, src, 4, NULL); // expected-error {{too many arguments to function call}}
  53 }