clang/test/Sema/attr-btf_tag.c

   1 // RUN: %clang_cc1 -x c -triple x86_64-pc-linux-gnu -dwarf-version=4 -fsyntax-only -verify %s
   2
   3 #define __tag1 __attribute__((btf_decl_tag("tag1")))
   4 #define __tag2 __attribute__((btf_decl_tag("tag2")))
   5 #define __tag3 __attribute__((btf_decl_tag("tag3")))
   6
   7 #define __tag_no_arg __attribute__((btf_decl_tag()))
   8 #define __tag_2_arg __attribute__((btf_decl_tag("tag1", "tag2")))
   9 #define __invalid __attribute__((btf_decl_tag(1)))
  10
  11 struct __tag1 __tag2 t1;
  12 struct t1 {
  13   int a __tag1;
  14 } __tag3;
  15
  16 struct __tag1 t2;
  17 struct __tag2 __tag3 t2 {
  18   int a __tag1;
  19 };
  20
  21 int g1 __tag1;
  22 int g2 __tag_no_arg; // expected-error {{'btf_decl_tag' attribute takes one argument}}
  23 int g3 __tag_2_arg; // expected-error {{'btf_decl_tag' attribute takes one argument}}
  24 int i1 __invalid; // expected-error {{expected string literal as argument of 'btf_decl_tag' attribute}}
  25
  26 enum e1 {
  27   E1
  28 } __tag1; // expected-error {{'btf_decl_tag' attribute only applies to variables, functions, structs, unions, classes, non-static data members, and typedefs}}
  29
  30 enum e2 {
  31   E2
  32 } __tag_no_arg; // expected-error {{'btf_decl_tag' attribute only applies to variables, functions, structs, unions, classes, non-static data members, and typedefs}}
  33
  34 enum e3 {
  35   E3
  36 } __tag_2_arg; // expected-error {{'btf_decl_tag' attribute only applies to variables, functions, structs, unions, classes, non-static data members, and typedefs}}
  37
  38 int __tag1 __tag2 foo(struct t1 *arg, struct t2 *arg2);
  39 int __tag2 __tag3 foo(struct t1 *arg, struct t2 *arg2);
  40 int __tag1 foo(struct t1 *arg __tag1, struct t2 *arg2) {
  41   return arg->a + arg2->a;
  42 }
  43
  44 typedef unsigned * __u1 __tag1 __tag2;
  45 typedef struct {
  46   int a;
  47 } __t2 __tag1 __tag2;
  48 int convert2(__t2 *arg) {
  49   return arg->a;
  50 }