1 files changed, 52 insertions, 0 deletions
diff --git a/test/sanitizer_common/TestCases/Linux/timerfd.cc b/test/sanitizer_common/TestCases/Linux/timerfd.cc
new file mode 100644
index 000000000000..e7613bb1d111
--- /dev/null
+++ b/test/sanitizer_common/TestCases/Linux/timerfd.cc
@@ -0,0 +1,52 @@
+// RUN: %clangxx -O0 -g %s -o %t && %run %t | FileCheck %s
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <sys/timerfd.h>
+#include <unistd.h>
+
+int main (int argc, char** argv)
+{
+  int fd = timerfd_create(CLOCK_REALTIME, 0);
+  assert(fd >= 0);
+
+  struct itimerspec its;
+  its.it_value.tv_sec = 0;
+  its.it_value.tv_nsec = 1000000;
+  its.it_interval.tv_sec = its.it_value.tv_sec;
+  its.it_interval.tv_nsec = its.it_value.tv_nsec;
+
+  int res = timerfd_settime(fd, 0, &its, NULL);
+  assert(res != -1);
+
+  struct itimerspec its2;
+  res = timerfd_settime(fd, 0, &its, &its2);
+  assert(res != -1);
+  assert(its2.it_interval.tv_sec == its.it_interval.tv_sec);
+  assert(its2.it_interval.tv_nsec == its.it_interval.tv_nsec);
+  assert(its2.it_value.tv_sec <= its.it_value.tv_sec);
+  assert(its2.it_value.tv_nsec <= its.it_value.tv_nsec);
+
+  struct itimerspec its3;
+  res = timerfd_gettime(fd, &its3);
+  assert(res != -1);
+  assert(its3.it_interval.tv_sec == its.it_interval.tv_sec);
+  assert(its3.it_interval.tv_nsec == its.it_interval.tv_nsec);
+  assert(its3.it_value.tv_sec <= its.it_value.tv_sec);
+  assert(its3.it_value.tv_nsec <= its.it_value.tv_nsec);
+
+
+  unsigned long long buf;
+  res = read(fd, &buf, sizeof(buf));
+  assert(res == 8);
+  assert(buf >= 1);
+
+  res = close(fd);
+  assert(res != -1);
+
+  printf("DONE\n");
+  // CHECK: DONE
+  
+  return 0;
+}