clang/test/Sema/attr-deprecated-c2x.c

   1 // RUN: %clang_cc1 %s -verify -fsyntax-only -std=c2x
   2
   3 [[deprecated]] int f(void); // expected-note 2 {{'f' has been explicitly marked deprecated here}}
   4 [[deprecated]] void g(void);// expected-note {{'g' has been explicitly marked deprecated here}}
   5 void g(void);
   6
   7 extern int var [[deprecated]]; // expected-note 2 {{'var' has been explicitly marked deprecated here}}
   8
   9 int a(void) {
  10   int (*ptr)(void) = f; // expected-warning {{'f' is deprecated}}
  11   f(); // expected-warning {{'f' is deprecated}}
  12
  13   // test if attributes propagate to functions
  14   g(); // expected-warning {{'g' is deprecated}}
  15
  16   return var; // expected-warning {{'var' is deprecated}}
  17 }
  18
  19 // test if attributes propagate to variables
  20 extern int var;
  21 int w(void) {
  22   return var; // expected-warning {{'var' is deprecated}}
  23 }
  24
  25 [[deprecated]] int old_fn(void);// expected-note {{'old_fn' has been explicitly marked deprecated here}}
  26 int old_fn(void);
  27 int (*fn_ptr)(void) = old_fn; // expected-warning {{'old_fn' is deprecated}}
  28
  29 int old_fn(void) {
  30   return old_fn()+1;  // no warning, deprecated functions can use deprecated symbols.
  31 }
  32
  33 struct foo {
  34   int x [[deprecated]]; // expected-note 3 {{'x' has been explicitly marked deprecated here}}
  35 };
  36
  37 void test1(struct foo *F) {
  38   ++F->x;  // expected-warning {{'x' is deprecated}}
  39   struct foo f1 = { .x = 17 }; // expected-warning {{'x' is deprecated}}
  40   struct foo f2 = { 17 }; // expected-warning {{'x' is deprecated}}
  41 }
  42
  43 typedef struct foo foo_dep [[deprecated]]; // expected-note {{'foo_dep' has been explicitly marked deprecated here}}
  44 foo_dep *test2;    // expected-warning {{'foo_dep' is deprecated}}
  45
  46 struct [[deprecated, // expected-note {{'bar_dep' has been explicitly marked deprecated here}}
  47          invalid_attribute]] bar_dep ;  // expected-warning {{unknown attribute 'invalid_attribute' ignored}}
  48
  49 struct bar_dep *test3;   // expected-warning {{'bar_dep' is deprecated}}
  50
  51 [[deprecated("this is the message")]] int i; // expected-note {{'i' has been explicitly marked deprecated here}}
  52 void test4(void) {
  53   i = 12; // expected-warning {{'i' is deprecated: this is the message}}
  54 }
  55
  56 // Ensure that deprecated only accepts one argument, not the replacement
  57 // argument supported as a GNU extension.
  58 [[deprecated("message", "replacement not supported")]] void test5(void); // expected-error {{'deprecated' attribute takes no more than 1 argument}}