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Opened 3 years ago

Closed 2 years ago

#11090 closed Bugs (fixed)

ex_future_unwrap- ThreadSanitizer: lock-order-inversion (potential deadlock)

Reported by: viboes Owned by: viboes
Milestone: Boost 1.60.0 Component: thread
Version: Boost 1.57.0 Severity: Problem
Keywords: Cc:

Description

Test output: BenPope x86_64 Ubuntu - thread - ex_future_unwrap / clang-linux-3.6~tsan~c14_libc++
Rev 9b68e2eec037cbcb6f96d7d54079e7e1a6a274ab / Mon, 09 Mar 2015 11:14:53 +0000
Compile [2015-03-09 15:31:16 UTC]: succeed


"clang++-3.6" -c -x c++ -Wextra -Wno-long-long -Wno-unused-parameter -Wunused-function -std=c++1y -stdlib=libc++ -fsanitize=thread -O0 -fno-inline -Wall -pthread -fPIC -Wextra -Wno-long-long -Wno-unused-parameter -Wunused-function -DBOOST_ALL_NO_LIB=1 -DBOOST_CHRONO_DYN_LINK=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_THREAD_BUILD_DLL=1 -DBOOST_THREAD_POSIX -DBOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED -DBOOST_THREAD_USE_DLL=1 -I".." -o "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/test/ex_future_unwrap.test/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/winrt_init.o" "../libs/thread/test/winrt_init.cpp"

            

Link [2015-03-09 15:31:16 UTC]: succeed


"clang++-3.6"  -Wl,-R -Wl,"/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/chrono/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi" -Wl,-R -Wl,"/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/system/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi" -Wl,-R -Wl,"/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi" -Wl,-rpath-link -Wl,"/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/chrono/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi" -Wl,-rpath-link -Wl,"/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/system/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi" -Wl,-rpath-link -Wl,"/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi" -o "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/test/ex_future_unwrap.test/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/ex_future_unwrap" -Wl,--start-group "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/test/ex_future_unwrap.test/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/future_unwrap.o" "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/test/ex_future_unwrap.test/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/winrt_init.o" "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/libboost_thread.so.1.58.0" "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/chrono/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/libboost_chrono.so.1.58.0" "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/system/build/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/libboost_system.so.1.58.0"  -Wl,-Bstatic  -Wl,-Bdynamic -lrt -Wl,--end-group -fsanitize=thread -lc++ -lc++abi -pthread 

RmTemps /home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/test/ex_future_unwrap.test/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/ex_future_unwrap

    rm -f "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/test/ex_future_unwrap.test/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/future_unwrap.o" "/home/ben/development/boost/test/build/develop/results/boost/bin.v2/libs/thread/test/ex_future_unwrap.test/clang-linux-3.6~tsan~c14_libc++/debug/debug-symbols-off/threading-multi/winrt_init.o"

            

Run [2015-03-09 15:31:16 UTC]: fail


==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M22 (0x7d4400009dc0) => M30 (0x7d4400009b40) => M22

  Mutex M30 acquired here while holding mutex M22 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M22 acquired here while holding mutex M30 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M48 (0x7d4400009b40) => M56 (0x7d4400009dc0) => M48

  Mutex M56 acquired here while holding mutex M48 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M48 acquired here while holding mutex M56 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M69 (0x7d440001dc80) => M77 (0x7d440001df00) => M69

  Mutex M77 acquired here while holding mutex M69 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M69 acquired here while holding mutex M77 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M90 (0x7d4400013f00) => M98 (0x7d4400009a00) => M90

  Mutex M98 acquired here while holding mutex M90 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M90 acquired here while holding mutex M98 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M111 (0x7d4400027f00) => M119 (0x7d44000098c0) => M111

  Mutex M119 acquired here while holding mutex M111 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M111 acquired here while holding mutex M119 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M132 (0x7d440003bf00) => M148 (0x7d4400009780) => M132

  Mutex M148 acquired here while holding mutex M132 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M132 acquired here while holding mutex M148 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M153 (0x7d4400031f00) => M161 (0x7d4400009640) => M153

  Mutex M161 acquired here while holding mutex M153 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M153 acquired here while holding mutex M161 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M174 (0x7d4400045f00) => M182 (0x7d4400009500) => M174

  Mutex M182 acquired here while holding mutex M174 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M174 acquired here while holding mutex M182 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M195 (0x7d4400059f00) => M203 (0x7d44000093c0) => M195

  Mutex M203 acquired here while holding mutex M195 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M195 acquired here while holding mutex M203 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M216 (0x7d440004ff00) => M232 (0x7d4400009280) => M216

  Mutex M232 acquired here while holding mutex M216 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M216 acquired here while holding mutex M232 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M237 (0x7d440006df00) => M253 (0x7d4400009140) => M237

  Mutex M253 acquired here while holding mutex M237 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M237 acquired here while holding mutex M253 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M258 (0x7d4400063f00) => M266 (0x7d4400009000) => M258

  Mutex M266 acquired here while holding mutex M258 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M258 acquired here while holding mutex M266 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M279 (0x7d4400077f00) => M287 (0x7d4400008ec0) => M279

  Mutex M287 acquired here while holding mutex M279 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M279 acquired here while holding mutex M287 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M300 (0x7d440008bf00) => M308 (0x7d4400008d80) => M300

  Mutex M308 acquired here while holding mutex M300 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M300 acquired here while holding mutex M308 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M324 (0x7d4400008d80) => M340 (0x7d440008bf00) => M324

  Mutex M340 acquired here while holding mutex M324 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M324 acquired here while holding mutex M340 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M345 (0x7d4400081c80) => M353 (0x7d4400081f00) => M345

  Mutex M353 acquired here while holding mutex M345 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M345 acquired here while holding mutex M353 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M366 (0x7d4400095f00) => M374 (0x7d4400008c40) => M366

  Mutex M374 acquired here while holding mutex M366 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M366 acquired here while holding mutex M374 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M390 (0x7d4400008c40) => M406 (0x7d4400095f00) => M390

  Mutex M406 acquired here while holding mutex M390 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M390 acquired here while holding mutex M406 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M411 (0x7d44000a9c80) => M419 (0x7d44000a9f00) => M411

  Mutex M419 acquired here while holding mutex M411 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M411 acquired here while holding mutex M419 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M432 (0x7d440009ff00) => M440 (0x7d4400008b00) => M432

  Mutex M440 acquired here while holding mutex M432 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M432 acquired here while holding mutex M440 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M453 (0x7d44000bdf00) => M461 (0x7d44000089c0) => M453

  Mutex M461 acquired here while holding mutex M453 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M453 acquired here while holding mutex M461 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M474 (0x7d44000b3f00) => M482 (0x7d4400008880) => M474

  Mutex M482 acquired here while holding mutex M474 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M474 acquired here while holding mutex M482 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M495 (0x7d44000c7f00) => M511 (0x7d4400008740) => M495

  Mutex M511 acquired here while holding mutex M495 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M495 acquired here while holding mutex M511 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2e0)
    #7 boost::future<int>::get() <null> (ex_future_unwrap+0x0000004f56d8)
    #8 main <null> (ex_future_unwrap+0x0000004f3351)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 boost::mutex::lock()
==================
==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=3377)
  Cycle in lock order graph: M516 (0x7d44000dbf00) => M524 (0x7d4400008600) => M516

  Mutex M524 acquired here while holding mutex M516 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::detail::shared_state_base::inc() <null> (ex_future_unwrap+0x0000004fc4cf)
    #5 boost::detail::basic_future<int>::basic_future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fc380)
    #6 boost::future<int>::future(boost::shared_ptr<boost::detail::shared_state<int> >) <null> (ex_future_unwrap+0x0000004fbe95)
    #7 boost::future<int> boost::detail::make_future_unwrap_shared_state<boost::future<boost::future<int> >, int>(boost::unique_lock<boost::mutex>&, boost::future<boost::future<int> >&&) <null> (ex_future_unwrap+0x0000004fb6ce)
    #8 boost::future<boost::future<int> >::unwrap() <null> (ex_future_unwrap+0x0000004f53fb)
    #9 main <null> (ex_future_unwrap+0x0000004f3343)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M516 acquired here while holding mutex M524 in main thread:
    #0 pthread_mutex_lock /home/development/llvm/3.6.0/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:3008:3 (ex_future_unwrap+0x0000004afd00)
    #1 boost::mutex::lock() <null> (ex_future_unwrap+0x0000004f9abb)
    #2 boost::unique_lock<boost::mutex>::lock() <null> (ex_future_unwrap+0x0000004f99e6)
    #3 boost::unique_lock<boost::mutex>::unique_lock(boost::mutex&) <null> (ex_future_unwrap+0x0000004f68e0)
    #4 boost::future<boost::future<int> >::get() <null> (ex_future_unwrap+0x00000050350b)
    #5 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::parent_value(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x000000503358)
    #6 boost::detail::future_unwrap_shared_state<boost::future<boost::future<int> >, int>::get(boost::unique_lock<boost::mutex>&) <null> (ex_future_unwrap+0x0000004fe2...

[The content has been trimmed by the report system because it exceeds 65536 bytes]            


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Change History (5)

comment:1 Changed 3 years ago by viboes

Owner: changed from Anthony Williams to viboes
Status: newassigned

comment:3 Changed 2 years ago by viboes

Milestone: Boost 1.58.0Boost 1.59.0

comment:4 Changed 2 years ago by viboes

Milestone: Boost 1.59.0Boost 1.60.0

comment:5 Changed 2 years ago by viboes

Resolution: fixed
Status: assignedclosed

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