Add C++ toolchain and fix compile issues.

This was accidentally introduced in 31f05d5d4f.

Fixes #788.

PiperOrigin-RevId: 266462843

WORKSPACE

@@ -32,6 +32,17 @@ load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies", "go_repository")
 
 gazelle_dependencies()
 
+# Load C++ rules.
+http_archive(
+    name = "rules_cc",
+    sha256 = "67412176974bfce3f4cf8bdaff39784a72ed709fc58def599d1f68710b58d68b",
+    strip_prefix = "rules_cc-b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_cc/archive/b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e.zip",
+        "https://github.com/bazelbuild/rules_cc/archive/b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e.zip",
+    ],
+)
+
 # Load protobuf dependencies.
 load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 

test/syscalls/linux/BUILD

@@ -1213,6 +1213,7 @@ cc_binary(
         "//test/util:test_main",
         "//test/util:test_util",
         "//test/util:thread_util",
+        "@com_google_absl//absl/memory",
         "@com_google_absl//absl/strings",
         "@com_google_googletest//:gtest",
     ],
@@ -3362,6 +3363,7 @@ cc_binary(
         "//test/util:test_util",
         "//test/util:thread_util",
         "@com_google_absl//absl/base:core_headers",
+        "@com_google_absl//absl/memory",
         "@com_google_absl//absl/synchronization",
         "@com_google_absl//absl/time",
         "@com_google_googletest//:gtest",

test/syscalls/linux/open.cc

@@ -21,6 +21,7 @@
 
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
+#include "absl/memory/memory.h"
 #include "test/syscalls/linux/file_base.h"
 #include "test/util/capability_util.h"
 #include "test/util/cleanup.h"

test/syscalls/linux/pty.cc

@@ -1292,10 +1292,8 @@ TEST_F(JobControlTest, ReleaseTTY) {
 
   // Make sure we're ignoring SIGHUP, which will be sent to this process once we
   // disconnect they TTY.
-  struct sigaction sa = {
-      .sa_handler = SIG_IGN,
-      .sa_flags = 0,
-  };
+  struct sigaction sa = {};
+  sa.sa_handler = SIG_IGN;
   sigemptyset(&sa.sa_mask);
   struct sigaction old_sa;
   EXPECT_THAT(sigaction(SIGHUP, &sa, &old_sa), SyscallSucceeds());
@@ -1362,10 +1360,8 @@ TEST_F(JobControlTest, ReleaseTTYSignals) {
   ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds());
 
   received = 0;
-  struct sigaction sa = {
-      .sa_handler = sig_handler,
-      .sa_flags = 0,
-  };
+  struct sigaction sa = {};
+  sa.sa_handler = sig_handler;
   sigemptyset(&sa.sa_mask);
   sigaddset(&sa.sa_mask, SIGHUP);
   sigaddset(&sa.sa_mask, SIGCONT);
@@ -1403,10 +1399,8 @@ TEST_F(JobControlTest, ReleaseTTYSignals) {
 
   // Make sure we're ignoring SIGHUP, which will be sent to this process once we
   // disconnect they TTY.
-  struct sigaction sighup_sa = {
-      .sa_handler = SIG_IGN,
-      .sa_flags = 0,
-  };
+  struct sigaction sighup_sa = {};
+  sighup_sa.sa_handler = SIG_IGN;
   sigemptyset(&sighup_sa.sa_mask);
   struct sigaction old_sa;
   EXPECT_THAT(sigaction(SIGHUP, &sighup_sa, &old_sa), SyscallSucceeds());
@@ -1456,10 +1450,8 @@ TEST_F(JobControlTest, SetForegroundProcessGroup) {
   ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds());
 
   // Ignore SIGTTOU so that we don't stop ourself when calling tcsetpgrp.
-  struct sigaction sa = {
-      .sa_handler = SIG_IGN,
-      .sa_flags = 0,
-  };
+  struct sigaction sa = {};
+  sa.sa_handler = SIG_IGN;
   sigemptyset(&sa.sa_mask);
   sigaction(SIGTTOU, &sa, NULL);
 

test/syscalls/linux/semaphore.cc

@@ -15,6 +15,7 @@
 #include <sys/ipc.h>
 #include <sys/sem.h>
 #include <sys/types.h>
+
 #include <atomic>
 #include <cerrno>
 #include <ctime>
@@ -22,6 +23,7 @@
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 #include "absl/base/macros.h"
+#include "absl/memory/memory.h"
 #include "absl/synchronization/mutex.h"
 #include "absl/time/clock.h"
 #include "test/util/capability_util.h"