[llvm-bugs] [Bug 27957] New: ThreadPoolTest.GetFuture hangs with 1 CPU.

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27957

            Bug ID: 27957
           Summary: ThreadPoolTest.GetFuture hangs with 1 CPU.
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: vlee at freedesktop.org
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

make check does not complete on a single CPU machine. It hangs at
ThreadPoolTest.GetFuture.

$ ./build/unittests/Support/SupportTests
--gtest_filter=ThreadPoolTest.GetFuture
Note: Google Test filter = ThreadPoolTest.GetFuture
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from ThreadPoolTest
[ RUN      ] ThreadPoolTest.GetFuture


(gdb) bt
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f282790dd7e in
std::__atomic_futex_unsigned_base::_M_futex_wait_until(unsigned int*, unsigned
int, bool, std::chrono::duration<long, std::ratio<1l, 1l> >,
std::chrono::duration<long, std::ratio<1l, 1000000000l> >) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x000055cf1ae988c4 in
std::__atomic_futex_unsigned<2147483648u>::_M_load_and_test_until
(this=0x55cf1bb90470, __assumed=0, __operand=1, __equal=true, 
    __mo=std::memory_order_acquire, __has_timeout=false, __s=..., __ns=...)
    at /usr/include/c++/5/bits/atomic_futex.h:104
#3  0x000055cf1ae97ecb in
std::__atomic_futex_unsigned<2147483648u>::_M_load_and_test
    (this=0x55cf1bb90470, __assumed=0, __operand=1, __equal=true, 
    __mo=std::memory_order_acquire) at
/usr/include/c++/5/bits/atomic_futex.h:122
#4  0x000055cf1ae96bbb in
std::__atomic_futex_unsigned<2147483648u>::_M_load_when_equal
(__mo=std::memory_order_acquire, __val=1, this=0x55cf1bb90470)
    at /usr/include/c++/5/bits/atomic_futex.h:162
#5  std::__future_base::_State_baseV2::wait (this=0x55cf1bb90460)
    at /usr/include/c++/5/future:322
#6  0x000055cf1ae975c4 in std::__basic_future<void>::_M_get_result (
    this=0x7fff16a34ae0) at /usr/include/c++/5/future:681
#7  0x000055cf1ae96c5a in std::shared_future<void>::get (this=0x7fff16a34ae0)
    at /usr/include/c++/5/future:967
#8  0x000055cf1ae94cea in ThreadPoolTest_GetFuture_Test::TestBody (
    this=0x55cf1bb90780)
    at unittests/Support/ThreadPool.cpp:145
#9  0x000055cf1afeb6d8 in
testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>
(object=0x55cf1bb90780, method=&virtual testing::Test::TestBody(), 
    location=0x55cf1b04eec3 "the test body")
    at utils/unittest/googletest/src/gtest.cc:2090
#10 0x000055cf1afe77ef in
testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>
(object=0x55cf1bb90780, method=&virtual testing::Test::TestBody(), 
    location=0x55cf1b04eec3 "the test body")
    at utils/unittest/googletest/src/gtest.cc:2142
#11 0x000055cf1afd5f2e in testing::Test::Run (this=0x55cf1bb90780)
    at utils/unittest/googletest/src/gtest.cc:2162
#12 0x000055cf1afd658a in testing::TestInfo::Run (this=0x55cf1bb873d0)
    at utils/unittest/googletest/src/gtest.cc:2309
#13 0x000055cf1afd6af8 in testing::TestCase::Run (this=0x55cf1bb870d0)
    at utils/unittest/googletest/src/gtest.cc:2416
#14 0x000055cf1afdb557 in testing::internal::UnitTestImpl::RunAllTests (
    this=0x55cf1bb6fd50)
    at utils/unittest/googletest/src/gtest.cc:4207
#15 0x000055cf1afec565 in
testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl,
bool> (object=0x55cf1bb6fd50, 
    method=(bool
(testing::internal::UnitTestImpl::*)(testing::internal::UnitTestImpl * const))
0x55cf1afdb298 <testing::internal::UnitTestImpl::RunAllTests()>, 
    location=0x55cf1b04f968 "auxiliary test code (environments or event
listeners)")
    at utils/unittest/googletest/src/gtest.cc:2090
#16 0x000055cf1afe80fd in
testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl,
bool> (object=0x55cf1bb6fd50, 
    method=(bool
(testing::internal::UnitTestImpl::*)(testing::internal::UnitTestImpl * const))
0x55cf1afdb298 <testing::internal::UnitTestImpl::RunAllTests()>, 
    location=0x55cf1b04f968 "auxiliary test code (environments or event
listeners)")
    at utils/unittest/googletest/src/gtest.cc:2142
#17 0x000055cf1afda54a in testing::UnitTest::Run (
    this=0x55cf1b317bc0 <testing::UnitTest::GetInstance()::instance>)
    at utils/unittest/googletest/src/gtest.cc:3841
#18 0x000055cf1afd127e in main (argc=1, argv=0x7fff16a35008)
    at utils/unittest/UnitTestMain/TestMain.cpp:47

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20160531/231796ee/attachment.html>