segfault-t failing under recent AddressSanitizer

Copy of https://bugs.mysql.com/bug.php?id=85671:

[28 Mar 11:43] Laurynas Biveinis
Description:
5.6.35 on Ubuntu Yakkety, GCC compiler with ASan:

unittest/gunit/merge_large_tests-t
...
# Run 3 FatalSignalDeathTest.Segfault
/home/laurynas/mysql-server/unittest/gunit/segfault-t.cc:66: FailureDeath test: *pint= 42
    Result: died but not with expected error.
  Expected: .*ASAN:SIGSEGV.*
Actual msg:
[ DEATH ] ASAN:DEADLYSIGNAL
[ DEATH ] =================================================================
[ DEATH ] ==8818==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x5564895c0b0f bp 0x7fff12e59450 sp 0x7fff12e59280 T0)
[ DEATH ] #0 0x5564895c0b0e in segfault_unittest::FatalSignalDeathTest_Segfault_Test::TestBody() /home/laurynas/mysql-server/unittest/gunit/segfault-t.cc:66
[ DEATH ] #1 0x55648aa755c1 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2402
[ DEATH ] #2 0x55648aa755c1 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2438
[ DEATH ] #3 0x55648aa6263e in testing::Test::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2475
[ DEATH ] #4 0x55648aa628db in testing::TestInfo::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2656
[ DEATH ] #5 0x55648aa62a62 in testing::TestCase::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2774
[ DEATH ] #6 0x55648aa62fb0 in testing::internal::UnitTestImpl::RunAllTests() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:4649
[ DEATH ] #7 0x55648aa76144 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2402
[ DEATH ] #8 0x55648aa76144 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2438
[ DEATH ] #9 0x55648aa6376c in testing::UnitTest::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:4257
[ DEATH ] #10 0x55648a14637b in RUN_ALL_TESTS() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/include/gtest/gtest.h:2233
[ DEATH ] #11 0x55648a14637b in main /home/laurynas/mysql-server/unittest/gunit/gunit_test_main_server.cc:72
[ DEATH ] #12 0x7f2f909f03f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)
[ DEATH ] #13 0x556489563569 in _start (/home/laurynas/obj-percona-5.6-asan-debug/unittest/gunit/merge_large_tests-t+0x671569)
[ DEATH ]
[ DEATH ] AddressSanitizer can not provide additional info.
[ DEATH ] SUMMARY: AddressSanitizer: SEGV /home/laurynas/mysql-server/unittest/gunit/segfault-t.cc:66 in segfault_unittest::FatalSignalDeathTest_Segfault_Test::TestBody()
[ DEATH ] ==8818==ABORTING
[ DEATH ]
not ok 3

How to repeat:
See above

Suggested fix:
Looks like both "ASAN:SIGSEGV" and "ASAN:DEADLYSIGNAL" should be expected