File: branch-clone-if-constexpr-template.cpp

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (58 lines) | stat: -rw-r--r-- 1,190 bytes parent folder | download | duplicates (10)
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
// RUN: %check_clang_tidy %s bugprone-branch-clone %t -- -- -std=c++17

void handle(int);

template <unsigned Index>
void shouldFail() {
  if constexpr (Index == 0) {
    // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: repeated branch in conditional chain [bugprone-branch-clone]
    handle(0);
  } else if constexpr (Index == 1) {
    handle(1);
  } else {
    handle(0);
  }
}

template <unsigned Index>
void shouldPass() {
  if constexpr (Index == 0) {
    handle(0);
  } else if constexpr (Index == 1) {
    handle(1);
  } else {
    handle(2);
  }
}

void shouldFailNonTemplate() {
  constexpr unsigned Index = 1;
  if constexpr (Index == 0) {
    // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: repeated branch in conditional chain [bugprone-branch-clone]
    handle(0);
  } else if constexpr (Index == 1) {
    handle(1);
  } else {
    handle(0);
  }
}

void shouldPassNonTemplate() {
  constexpr unsigned Index = 1;
  if constexpr (Index == 0) {
    handle(0);
  } else if constexpr (Index == 1) {
    handle(1);
  } else {
    handle(2);
  }
}

void run() {
    shouldFail<0>();
    shouldFail<1>();
    shouldFail<2>();
    shouldPass<0>();
    shouldPass<1>();
    shouldPass<2>();
}