43 lines · cpp
1// RUN: %clangxx_msan -O0 -std=c++11 -g %s -o %t2// RUN: %run %t _ 2>&1 | FileCheck %s --check-prefix=CLEAN3// RUN: not %run %t A 2>&1 | FileCheck %s --check-prefix=A4// RUN: not %run %t B 2>&1 | FileCheck %s --check-prefix=B5 6#include <assert.h>7#include <poll.h>8#include <signal.h>9#include <stdio.h>10 11#include <sanitizer/msan_interface.h>12 13int main(int argc, char **argv) {14 char T = argv[1][0];15 16 struct timespec ts;17 ts.tv_sec = 0;18 ts.tv_nsec = 1000;19 int res = ppoll(nullptr, 0, &ts, nullptr);20 assert(res == 0);21 22 if (T == 'A') {23 __msan_poison(&ts.tv_sec, sizeof(ts.tv_sec));24 ppoll(nullptr, 0, &ts, nullptr);25 // A: use-of-uninitialized-value26 }27 28 // A-NOT: ==129 // B: ==130 fprintf(stderr, "==1\n");31 32 sigset_t sig;33 if (T != 'B')34 sigemptyset(&sig);35 ppoll(nullptr, 0, &ts, &sig);36 // B: use-of-uninitialized-value37 38 // B-NOT: ==239 // CLEAN: ==240 fprintf(stderr, "==2\n");41 return 0;42}43