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

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 #define NULL ((char *)0)
   4
   5 #if __has_builtin(__builtin_memset_inline)
   6 #warning defined as expected
   7 // expected-warning@-1 {{defined as expected}}
   8 #endif
   9
  10 void test_memset_inline_invalid_arg_types() {
  11   __builtin_memset_inline(1, 2, 3); // expected-error {{cannot initialize a parameter of type 'void *' with an rvalue of type 'int'}}
  12 }
  13
  14 void test_memset_inline_null_dst(void *ptr) {
  15   __builtin_memset_inline(NULL, 1, 4); // expected-warning {{null passed to a callee that requires a non-null argument}}
  16 }
  17
  18 void test_memset_inline_null_buffer_is_ok_if_size_is_zero(void *ptr, char value) {
  19   __builtin_memset_inline(NULL, value, /*size */ 0);
  20 }
  21
  22 void test_memset_inline_non_constant_size(void *dst, char value, unsigned size) {
  23   __builtin_memset_inline(dst, value, size); // expected-error {{argument to '__builtin_memset_inline' must be a constant integer}}
  24 }
  25
  26 template <unsigned size>
  27 void test_memset_inline_template(void *dst, char value) {
  28   // we do not try to evaluate size in non intantiated templates.
  29   __builtin_memset_inline(dst, value, size);
  30 }
  31
  32 void test_memset_inline_implicit_conversion(void *ptr, char value) {
  33   char a[5];
  34   __builtin_memset_inline(a, value, 5);
  35 }
  36
  37 void test_memset_inline_num_args(void *dst, char value) {
  38   __builtin_memset_inline();                    // expected-error {{too few arguments to function call}}
  39   __builtin_memset_inline(dst, value, 4, NULL); // expected-error {{too many arguments to function call}}
  40 }