File: error-type-safety.cpp

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (52 lines) | stat: -rw-r--r-- 1,966 bytes parent folder | download | duplicates (27)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
// RUN: %clang_cc1 -fsyntax-only -verify %s

#define INT_TAG 42

static const int test_in
    __attribute__((type_tag_for_datatype(test, int))) = INT_TAG;

// Argument index: 1, Type tag index: 2
void test_bounds_index(...)
    __attribute__((argument_with_type_tag(test, 1, 2)));

// Argument index: 1, Type tag index: 2
void test_bounds_index_ptr(void *, ...)
    __attribute__((pointer_with_type_tag(test, 1, 2)));

// Argument index: 3, Type tag index: 1
void test_bounds_arg_index(...)
    __attribute__((argument_with_type_tag(test, 3, 1)));

class C {
public:
  // Argument index: 2, Type tag index: 3
  void test_bounds_index(...)
      __attribute__((argument_with_type_tag(test, 2, 3)));

  // Argument index: 2, Type tag index: 3
  void test_bounds_index_ptr(void *, ...)
      __attribute__((pointer_with_type_tag(test, 2, 3)));

  // Argument index: 4, Type tag index: 2
  void test_bounds_arg_index(...)
      __attribute__((argument_with_type_tag(test, 4, 2)));
};

void test_bounds()
{
  C c;

  // Test the boundary edges (ensure no off-by-one) with argument indexing.
  test_bounds_index(1, INT_TAG);
  c.test_bounds_index(1, INT_TAG);
  test_bounds_index_ptr(0, INT_TAG);
  c.test_bounds_index_ptr(0, INT_TAG);

  test_bounds_index(1);       // expected-error {{type tag index 2 is greater than the number of arguments specified}}
  c.test_bounds_index(1);     // expected-error {{type tag index 3 is greater than the number of arguments specified}}
  test_bounds_index_ptr(0);   // expected-error {{type tag index 2 is greater than the number of arguments specified}}
  c.test_bounds_index_ptr(0); // expected-error {{type tag index 3 is greater than the number of arguments specified}}

  test_bounds_arg_index(INT_TAG, 1);   // expected-error {{argument index 3 is greater than the number of arguments specified}}
  c.test_bounds_arg_index(INT_TAG, 1); // expected-error {{argument index 4 is greater than the number of arguments specified}}
}