llvm-project/clang/test/Sema/bpf-attr-preserve-access-index.c
Aaron Ballman e765e0bc8e Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the first batch of tests being updated (there are a significant
number of other tests left to be updated).
2022-02-03 16:42:27 -05:00

49 lines
1.3 KiB
C

// RUN: %clang_cc1 -x c -triple bpf-pc-linux-gnu -dwarf-version=4 -fsyntax-only -verify %s
#define __reloc__ __attribute__((preserve_access_index))
#define __err_reloc__ __attribute__((preserve_access_index(0)))
struct t1 {
int a;
int b[4];
int c:1;
} __reloc__;
union t2 {
int a;
int b[4];
int c:1;
} __reloc__;
struct t3 {
int a;
} __err_reloc__; // expected-error {{'preserve_access_index' attribute takes no arguments}}
struct t4 {
union {
int a;
char b[5];
};
struct {
int c:1;
} __reloc__;
int d;
} __reloc__;
struct __reloc__ p;
struct __reloc__ q;
struct p {
int a;
};
int a __reloc__; // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}
struct s *p __reloc__; // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}
void invalid1(const int __reloc__ *arg) {} // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}
void invalid2(void) { const int __reloc__ *arg; } // expected-error {{'preserve_access_index' attribute only applies to structs, unions, and classes}}
int valid3(struct t4 *arg) { return arg->a + arg->b[3] + arg->c + arg->d; }
int valid4(void *arg) {
struct local_t { int a; int b; } __reloc__;
return ((struct local_t *)arg)->b;
}