Don’t trigger EXC_CORPSE_NOTIFY on OS X 10.11

util/mach/mach_extensions_test.cc

Index: util/mach/mach_extensions_test.cc
diff --git a/util/mach/mach_extensions_test.cc b/util/mach/mach_extensions_test.cc
index aefe489d1bf993ad2f96c11fc2210402e7a2db09..9853944cb969875be186042a05e87dbf6badaf14 100644
--- a/util/mach/mach_extensions_test.cc
+++ b/util/mach/mach_extensions_test.cc
@@ -17,6 +17,7 @@
 #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 {
@@ -60,6 +61,76 @@ TEST(MachExtensions, NewMachPort_DeadName) {
   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