File: poll.cpp

package info (click to toggle)
swiftlang 6.1.3-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,532 kB
  • sloc: cpp: 9,901,743; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (42 lines) | stat: -rw-r--r-- 929 bytes parent folder | download | duplicates (36) 
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
 
// RUN: %clangxx_msan -O0 -std=c++11 -g %s -o %t
// RUN: %run %t _ 2>&1 | FileCheck %s --check-prefix=CLEAN
// RUN: not %run %t A 2>&1 | FileCheck %s --check-prefix=A
// RUN: not %run %t B 2>&1 | FileCheck %s --check-prefix=B

#include <assert.h>
#include <poll.h>
#include <signal.h>
#include <stdio.h>

#include <sanitizer/msan_interface.h>

int main(int argc, char **argv) {
  char T = argv[1][0];

  struct timespec ts;
  ts.tv_sec = 0;
  ts.tv_nsec = 1000;
  int res = ppoll(nullptr, 0, &ts, nullptr);
  assert(res == 0);

  if (T == 'A') {
    __msan_poison(&ts.tv_sec, sizeof(ts.tv_sec));
    ppoll(nullptr, 0, &ts, nullptr);
    // A: use-of-uninitialized-value
  }

  // A-NOT: ==1
  // B: ==1
  fprintf(stderr, "==1\n");

  sigset_t sig;
  if (T != 'B')
    sigemptyset(&sig);
  ppoll(nullptr, 0, &ts, &sig);
  // B: use-of-uninitialized-value

  // B-NOT: ==2
  // CLEAN: ==2
  fprintf(stderr, "==2\n");
  return 0;
}