File: misplaced-const.cpp

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (64 lines) | stat: -rw-r--r-- 1,201 bytes parent folder | download | duplicates (25)
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
53
54
55
56
57
58
59
60
61
62
63
64
// RUN: %check_clang_tidy %s misc-misplaced-const %t -- -- -DUSING
// RUN: %check_clang_tidy %s misc-misplaced-const %t -- -- -DTYPEDEF

#ifdef TYPEDEF
typedef int int_;
typedef int *ptr_to_int;
typedef const int *ptr_to_const_int;
#endif
#ifdef USING
using int_ = int;
using ptr_to_int = int *;
using ptr_to_const_int = const int *;
#endif

void const_pointers() {
  if (const int *i = 0) {
    i = 0;
    // *i = 0;
  }

  if (const int_ *i = 0) {
    i = 0;
    // *i = 0;
  }

  if (const ptr_to_const_int i = 0) {
    // i = 0;
    // *i = 0;
  }

  // Potentially quite unexpectedly the int can be modified here
  // CHECK-MESSAGES: :[[@LINE+1]]:24: warning: 'i' declared with a const-qualified {{.*}}; results in the type being 'int *const' instead of 'const int *'
  if (const ptr_to_int i = 0) {
    //i = 0;

    *i = 0;
  }
}

template <typename Ty>
struct S {
  const Ty *i;
  const Ty &i2;
};

template struct S<int>;
template struct S<ptr_to_int>; // ok
template struct S<ptr_to_const_int>;

template <typename Ty>
struct U {
  const Ty *i;
  const Ty &i2;
};

template struct U<int *>; // ok

struct T {
  typedef void (T::*PMF)();

  void f() {
    const PMF val = &T::f; // ok
  }
};