| Index: runtime/vm/os_thread_linux.cc
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| diff --git a/runtime/vm/os_thread_linux.cc b/runtime/vm/os_thread_linux.cc
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| index 94bb823054519b63205779a5df53a77c96914496..c99189b1b764536e7266159a3bd2921e5f61d3b9 100644
 | 
| --- a/runtime/vm/os_thread_linux.cc
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| +++ b/runtime/vm/os_thread_linux.cc
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| @@ -170,6 +170,11 @@ intptr_t OSThread::ThreadIdToIntPtr(ThreadId id) {
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|  }
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|  
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|  
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| +ThreadId OSThread::ThreadIdFromIntPtr(intptr_t id) {
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| +  return static_cast<ThreadId>(id);
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| +}
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| +
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| +
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|  bool OSThread::Compare(ThreadId a, ThreadId b) {
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|    return pthread_equal(a, b) != 0;
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|  }
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| 
 |