diff --git src/gtest-port.cc b/src/gtest-port.cc
index b860d48..acb459b 100644
--- a/src/gtest-port.cc
+++ b/src/gtest-port.cc
@@ -98,6 +98,21 @@ size_t GetThreadCount() {
   }
 }
 
+#elif GTEST_OS_LINUX
+
+size_t GetThreadCount() {
+  size_t thread_count = 0;
+  if (DIR *dir = opendir("/proc/self/task")) {
+    while (dirent *entry = readdir(dir)) {
+      if (strcmp(entry->d_name, ".") != 0 && strcmp(entry->d_name, "..") != 0) {
+        ++thread_count;
+      }
+    }
+    closedir(dir);
+  }
+  return thread_count;
+}
+
 #else
 
 size_t GetThreadCount() {
diff --git a/src/gtest-death-test.cc b/src/gtest-death-test.cc
index 8b2e413..faad3a4 100644
--- a/src/gtest-death-test.cc
+++ b/src/gtest-death-test.cc
@@ -44,6 +44,8 @@
 # include <fcntl.h>
 # include <limits.h>
 # include <stdarg.h>
+# include <sys/time.h>
+# include <sys/resource.h>
 
 # if GTEST_OS_WINDOWS
 #  include <windows.h>
@@ -898,6 +900,11 @@ inline char** GetEnviron() { return environ; }
 // This function is called in a clone()-ed process and thus must avoid
 // any potentially unsafe operations like malloc or libc functions.
 static int ExecDeathTestChildMain(void* child_arg) {
+  rlimit core_rlimit;
+  core_rlimit.rlim_cur = 0;
+  core_rlimit.rlim_max = 0;
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(setrlimit(RLIMIT_CORE, &core_limit));
+
   ExecDeathTestArgs* const args = static_cast<ExecDeathTestArgs*>(child_arg);
   GTEST_DEATH_TEST_CHECK_SYSCALL_(close(args->close_fd));