Current Unit Tests Fail With Segfault

[theNerd247]

Here's the back trace. I'm running on Arch Linux and compiling with g++ 6.1.1 (compiling as 64 bit):

Program received signal SIGSEGV, Segmentation fault.
0x000000000046d24c in YAML::MockEventHandler::OnDocumentStart(YAML::Mark const&) ()
(gdb) bt
#0  0x000000000046d24c in YAML::MockEventHandler::OnDocumentStart(YAML::Mark const&) ()
#1  0x000000000069702f in YAML::SingleDocParser::HandleDocument(YAML::EventHandler&) ()
#2  0x000000000067735a in YAML::Parser::HandleNextDocument(YAML::EventHandler&) ()
#3  0x000000000046c3ef in YAML::(anonymous namespace)::EncodingTest::Run() ()
#4  0x00000000006d6724 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) ()
#5  0x00000000006cf4ac in testing::Test::Run() [clone .part.387] ()
#6  0x00000000006cf665 in testing::TestInfo::Run() [clone .part.388] ()
#7  0x00000000006cf7c5 in testing::TestCase::Run() [clone .part.389] ()
#8  0x00000000006cfc15 in testing::internal::UnitTestImpl::RunAllTests() ()
#9  0x00000000006d6b74 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) ()
#10 0x00000000006cff25 in testing::UnitTest::Run() ()
#11 0x000000000043a70f in main ()

[mvduin]

Problem still present in current HEAD, segfault while running EncodingTest.UTF8_noBOM.

gcc version 6.2.1 20161124 (Debian 6.2.1-5).

The segfault does not occur in a Debug (-O0) build but does in a RelWithDebInfo (-O2 -DNDEBUG) build. Testing shows that -O2 -DNDEBUG seems to be the minimum for the crash to occur:
-O3 -DNDEBUG: segfault
-O2 -DNDEBUG: segfault
-O1 -DNDEBUG: ok
-Og -DNDEBUG: ok
-O3: ok
-O2: ok

More detailed traceback from a RelWithDebInfo build:

#0  testing::internal::FunctionMockerBase<void (YAML::Mark const&)>::InvokeWith(std::tuple<YAML::Mark const&> const&) (args=std::tuple containing = {...}, this=0x555555c0e410)
    at yaml-cpp/test/gmock-1.7.0/include/gmock/gmock-spec-builders.h:1530
#1  testing::internal::FunctionMocker<void (YAML::Mark const&)>::Invoke(YAML::Mark const&) (
    a1=..., this=0x555555c0e410)
    at yaml-cpp/test/gmock-1.7.0/include/gmock/gmock-generated-function-mockers.h:97
#2  YAML::MockEventHandler::OnDocumentStart (this=this@entry=0x555555c0e408, gmock_a1=...)
    at yaml-cpp/test/mock_event_handler.h:10
#3  0x00005555558650cf in YAML::SingleDocParser::HandleDocument (
    this=this@entry=0x7fffffffdb10, eventHandler=...)
    at yaml-cpp/src/singledocparser.cpp:32
#4  0x000055555584aa5d in YAML::Parser::HandleNextDocument (this=this@entry=0x7fffffffdc50, 
    eventHandler=...) at yaml-cpp/src/parser.cpp:39
#5  0x000055555562419d in YAML::HandlerTest::Parse (
    example="- |\n  !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\n- |\n  ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍ", <incomplete sequence \303>..., this=0x555555c0e3f0)
    at yaml-cpp/test/handler_test.h:17
#6  YAML::(anonymous namespace)::EncodingTest::Run (this=0x555555c0e3f0)
    at yaml-cpp/test/integration/encoding_test.cpp:105
#7  0x000055555589a8c4 in testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void> (location=0x5555558f10a9 "the test body", method=<optimized out>, 
    object=<optimized out>)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2078
#8  testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void> (
    object=object@entry=0x555555c0e3f0, method=<optimized out>, 
    location=location@entry=0x5555558f10a9 "the test body")
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2114
#9  0x000055555589325a in testing::Test::Run (this=this@entry=0x555555c0e3f0)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2151
#10 0x000055555589342d in testing::Test::Run (this=0x555555c0e3f0)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2142
#11 testing::TestInfo::Run (this=0x555555bc7560)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2326
#12 0x00005555558935a5 in testing::TestInfo::Run (this=<optimized out>)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2301
#13 testing::TestCase::Run (this=0x555555bc7650)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2444
#14 0x0000555555893a15 in testing::TestCase::Run (this=<optimized out>)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:4353
#15 testing::internal::UnitTestImpl::RunAllTests (this=0x555555bbed70)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:4315
#16 0x000055555589ad14 in testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> (
    location=0x5555558f06f8 "auxiliary test code (environments or event listeners)", 
    method=<optimized out>, object=<optimized out>)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2078
#17 testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> (object=0x555555bbed70, method=<optimized out>, 
    location=location@entry=0x5555558f06f8 "auxiliary test code (environments or event listeners)") at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:2114
#18 0x0000555555893d49 in testing::UnitTest::Run (
    this=0x555555bac9a0 <testing::UnitTest::GetInstance()::instance>)
    at yaml-cpp/test/gmock-1.7.0/gtest/src/gtest.cc:3926
#19 0x00005555555ef79f in RUN_ALL_TESTS ()
    at yaml-cpp/test/gmock-1.7.0/gtest/include/gtest/gtest.h:2288
#20 main (argc=<optimized out>, argv=<optimized out>)
    at yaml-cpp/test/main.cpp:5

[tepperly]

This problem disappeared for me with the latest available version on master.