Hi dschuff, danalbert, NaCl shouldn't include sysctl.h when trying to determine std::thread::hardware_concurrency, it should instead use sysconf(_SC_NPROCESSORS_ONLN) through unistd.h. No test needs to be changed, since hardware_concurrency.pass.cpp already tests that std::thread::hardware_concurrency > 0.
http://reviews.llvm.org/D6470 Files: src/thread.cpp
Index: src/thread.cpp =================================================================== --- src/thread.cpp +++ src/thread.cpp @@ -17,10 +17,10 @@ #include "limits" #include <sys/types.h> #if !defined(_WIN32) -#if !defined(__sun__) && !defined(__linux__) && !defined(_AIX) -#include <sys/sysctl.h> -#endif // !__sun__ && !__linux__ && !_AIX -#include <unistd.h> +# if !defined(__sun__) && !defined(__linux__) && !defined(_AIX) && !defined(__native_client__) +# include <sys/sysctl.h> +# endif // !defined(__sun__) && !defined(__linux__) && !defined(_AIX) && !defined(__native_client__) +# include <unistd.h> #endif // !_WIN32 #if defined(__NetBSD__)
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