Don’t trigger EXC_CORPSE_NOTIFY on OS X 10.11

util/mach/mach_extensions_test.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/mach/mach_extensions.h"
 
 #include "base/mac/scoped_mach_port.h"
 #include "gtest/gtest.h"
 #include "test/mac/mach_errors.h"
+#include "util/mac/mac_util.h"
 
 namespace crashpad {
 namespace test {
 namespace {
 
 TEST(MachExtensions, MachThreadSelf) {
   base::mac::ScopedMachSendRight thread_self(mach_thread_self());
   EXPECT_EQ(thread_self, MachThreadSelf());
 }
 
@@ skipping 23 matching lines @@
   base::mac::ScopedMachSendRight port(NewMachPort(MACH_PORT_RIGHT_DEAD_NAME));
   ASSERT_NE(kMachPortNull, port);
 
   mach_port_type_t type;
   kern_return_t kr = mach_port_type(mach_task_self(), port, &type);
   ASSERT_EQ(KERN_SUCCESS, kr) << MachErrorMessage(kr, "mach_port_get_type");
 
   EXPECT_EQ(MACH_PORT_TYPE_DEAD_NAME, type);
 }
 
+const exception_mask_t kExcMaskBasic =
+    EXC_MASK_BAD_ACCESS |
+    EXC_MASK_BAD_INSTRUCTION |
+    EXC_MASK_ARITHMETIC |
+    EXC_MASK_EMULATION |
+    EXC_MASK_SOFTWARE |
+    EXC_MASK_BREAKPOINT |
+    EXC_MASK_SYSCALL |
+    EXC_MASK_MACH_SYSCALL |
+    EXC_MASK_RPC_ALERT;
+
+TEST(MachExtensions, ExcMaskAll) {
+  const exception_mask_t exc_mask_all = ExcMaskAll();
+  EXPECT_EQ(kExcMaskBasic, exc_mask_all & kExcMaskBasic);
+
+  EXPECT_FALSE(exc_mask_all & EXC_MASK_CRASH);
+  EXPECT_FALSE(exc_mask_all & EXC_MASK_CORPSE_NOTIFY);
+
+  const int mac_os_x_minor_version = MacOSXMinorVersion();
+  if (mac_os_x_minor_version >= 8) {
+    EXPECT_TRUE(exc_mask_all & EXC_MASK_RESOURCE);
+  } else {
+    EXPECT_FALSE(exc_mask_all & EXC_MASK_RESOURCE);
+  }
+
+  if (mac_os_x_minor_version >= 9) {
+    EXPECT_TRUE(exc_mask_all & EXC_MASK_GUARD);
+  } else {
+    EXPECT_FALSE(exc_mask_all & EXC_MASK_GUARD);
+  }
+
+  // Bit 0 should not be set.
+  EXPECT_FALSE(ExcMaskAll() & 1);
+
+  // Every bit set in ExcMaskAll() must also be set in ExcMaskValid().
+  EXPECT_EQ(ExcMaskAll(), ExcMaskAll() & ExcMaskValid());
+}
+
+TEST(MachExtensions, ExcMaskValid) {
+  const exception_mask_t exc_mask_valid = ExcMaskValid();
+  EXPECT_EQ(kExcMaskBasic, exc_mask_valid & kExcMaskBasic);
+
+  EXPECT_TRUE(exc_mask_valid & EXC_MASK_CRASH);
+
+  const int mac_os_x_minor_version = MacOSXMinorVersion();
+  if (mac_os_x_minor_version >= 8) {
+    EXPECT_TRUE(exc_mask_valid & EXC_MASK_RESOURCE);
+  } else {
+    EXPECT_FALSE(exc_mask_valid & EXC_MASK_RESOURCE);
+  }
+
+  if (mac_os_x_minor_version >= 9) {
+    EXPECT_TRUE(exc_mask_valid & EXC_MASK_GUARD);
+  } else {
+    EXPECT_FALSE(exc_mask_valid & EXC_MASK_GUARD);
+  }
+
+  if (mac_os_x_minor_version >= 11) {
+    EXPECT_TRUE(exc_mask_valid & EXC_MASK_CORPSE_NOTIFY);
+  } else {
+    EXPECT_FALSE(exc_mask_valid & EXC_MASK_CORPSE_NOTIFY);
+  }
+
+  // Bit 0 should not be set.
+  EXPECT_FALSE(ExcMaskValid() & 1);
+
+  // There must be bits set in ExcMaskValid() that are not set in ExcMaskAll().
+  EXPECT_TRUE(ExcMaskValid() & ~ExcMaskAll());
+}
+
 }  // namespace
 }  // namespace test
 }  // namespace crashpad