49 lines · c
1// RUN: %clang_cc1 -x c -triple bpf-pc-linux-gnu -dwarf-version=4 -fsyntax-only -verify %s2 3#define __reloc__ __attribute__((preserve_access_index))4#define __err_reloc__ __attribute__((preserve_access_index(0)))5 6struct t1 {7 int a;8 int b[4];9 int c:1;10} __reloc__;11 12union t2 {13 int a;14 int b[4];15 int c:1;16} __reloc__;17 18struct t3 {19 int a;20} __err_reloc__; // expected-error {{'preserve_access_index' attribute takes no arguments}}21 22struct t4 {23 union {24 int a;25 char b[5];26 };27 struct {28 int c:1;29 } __reloc__;30 int d;31} __reloc__;32 33struct __reloc__ p;34struct __reloc__ q;35struct p {36 int a;37};38 39int a __reloc__; // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}40struct s *p __reloc__; // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}41 42void invalid1(const int __reloc__ *arg) {} // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}43void invalid2(void) { const int __reloc__ *arg; } // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}44int valid3(struct t4 *arg) { return arg->a + arg->b[3] + arg->c + arg->d; }45int valid4(void *arg) {46 struct local_t { int a; int b; } __reloc__;47 return ((struct local_t *)arg)->b;48}49