File: gcov-complex-line.c

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 (55 lines) | stat: -rw-r--r-- 1,241 bytes parent folder | download | duplicates (24) 
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
 
// This test checks that the cycle detection algorithm in llvm-cov is able to
// handle complex block graphs by skipping zero count cycles.
//
// RUN: mkdir -p %t.dir && cd %t.dir
// RUN: %clang --coverage %s -o %t -dumpdir ./
// RUN: rm -f gcov-complex-line.gcda && %run %t
// RUN: llvm-cov gcov -t gcov-complex-line.c | FileCheck %s

#define M_0     \
  do {          \
    if (x == 0) \
      x = 0;    \
    else        \
      x = 1;    \
  } while (0)
#define M_1 \
  do {      \
    M_0;    \
    M_0;    \
    M_0;    \
    M_0;    \
  } while (0)
#define M_2 \
  do {      \
    M_1;    \
    M_1;    \
    M_1;    \
    M_1;    \
  } while (0)
#define M_3 \
  do {      \
    M_2;    \
    M_2;    \
    M_2;    \
    M_2;    \
  } while (0)
#define M_4 \
  do {      \
    M_3;    \
    M_3;    \
    M_3;    \
    M_3;    \
  } while (0)
#define COMPLEX_LINE              \
  do {                            \
    for (int i = 0; i < 100; ++i) \
      M_4;                        \
  } while (0)

int main() {
  volatile int x = 0;
  // In the following line, the number of cycles in the block graph is at least
  // 2^256, where 256 is the number of expansions of M_0.
  COMPLEX_LINE; // CHECK: 101: [[#@LINE]]: COMPLEX_LINE;
}