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@@ -152,24 +152,24 @@ thread::thread(const function0<void>& threadfunc, unsigned int stack_size)
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     if (!m_thread)
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         throw thread_resource_error();
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 #elif defined(BOOST_HAS_PTHREADS)
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-    int res = 0, e;
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+    int res = 0;
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     pthread_attr_t attr;
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-    if (pthread_attr_init(&attr) != 0) {
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-        throw thread_resource_error("Cannot initialize thread attributes", e);
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+    res = pthread_attr_init(&attr);
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+    if (res != 0) {
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+        throw thread_resource_error("Cannot initialize thread attributes", res);
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     }
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     if (stack_size > 0) {
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-        if (pthread_attr_setstacksize(&attr, stack_size) != 0) {
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-            e = errno;
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+        res = pthread_attr_setstacksize(&attr, stack_size);
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+        if (res != 0) {
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             pthread_attr_destroy(&attr);
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-            throw thread_resource_error("Cannot set thread stack size attribute", e);
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+            throw thread_resource_error("Cannot set thread stack size attribute", res);
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         }
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     }
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     res = pthread_create(&m_thread, &attr, &thread_proxy, &param);
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-    e = errno;
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     pthread_attr_destroy(&attr);
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     if (res != 0)
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-        throw thread_resource_error("Cannot create a thread", e);
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+        throw thread_resource_error("Cannot create a thread", res);
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 #elif defined(BOOST_HAS_MPTASKS)
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     threads::mac::detail::thread_init();
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     threads::mac::detail::create_singletons();