| // RUN: %clangxx_msan -std=c++11 -O0 -g %s -o %t && %run %t |
| // RUN: %clangxx_msan -DPOSITIVE -std=c++11 -O0 -g %s -o %t && not %run %t 2>&1 | FileCheck %s |
| |
| #include <assert.h> |
| #include <signal.h> |
| #include <sys/time.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| |
| #include <sanitizer/msan_interface.h> |
| |
| void test_sigwait() { |
| sigset_t s; |
| #ifndef POSITIVE |
| sigemptyset(&s); |
| sigaddset(&s, SIGUSR1); |
| #endif |
| sigprocmask(SIG_BLOCK, &s, 0); |
| // CHECK: MemorySanitizer: use-of-uninitialized-value |
| |
| if (pid_t pid = fork()) { |
| kill(pid, SIGUSR1); |
| int child_stat; |
| wait(&child_stat); |
| _exit(!WIFEXITED(child_stat)); |
| } else { |
| int sig; |
| int res = sigwait(&s, &sig); |
| assert(!res); |
| // The following checks that sig is initialized. |
| assert(sig == SIGUSR1); |
| } |
| } |
| |
| int main(void) { |
| test_sigwait(); |
| return 0; |
| } |