Index: lib/lsan/lsan_interceptors.cc
===================================================================
--- lib/lsan/lsan_interceptors.cc
+++ lib/lsan/lsan_interceptors.cc
@@ -29,6 +29,10 @@
 
 #include <stddef.h>
 
+#if SANITIZER_POSIX
+#include "sanitizer_common/sanitizer_posix.h"
+#endif
+
 using namespace __lsan;
 
 extern "C" {
@@ -281,7 +285,8 @@
     res = REAL(pthread_create)(th, attr, __lsan_thread_start_func, &p);
   }
   if (res == 0) {
-    int tid = ThreadCreate(GetCurrentThread(), *(uptr *)th, detached);
+    int tid = ThreadCreate(GetCurrentThread(), *(uptr *)th,
+                           IsStateDetached(detached));
     CHECK_NE(tid, 0);
     atomic_store(&p.tid, tid, memory_order_release);
     while (atomic_load(&p.tid, memory_order_acquire) != 0)
Index: lib/sanitizer_common/sanitizer_posix.h
===================================================================
--- lib/sanitizer_common/sanitizer_posix.h
+++ lib/sanitizer_common/sanitizer_posix.h
@@ -87,6 +87,9 @@
 
 uptr internal_execve(const char *filename, char *const argv[],
                      char *const envp[]);
+
+bool IsStateDetached(int state);
+
 }  // namespace __sanitizer
 
 #endif  // SANITIZER_POSIX_H
Index: lib/sanitizer_common/sanitizer_posix_libcdep.cc
===================================================================
--- lib/sanitizer_common/sanitizer_posix_libcdep.cc
+++ lib/sanitizer_common/sanitizer_posix_libcdep.cc
@@ -418,6 +418,10 @@
   return process_status;
 }
 
+bool IsStateDetached(int state) {
+  return state == PTHREAD_CREATE_DETACHED;
+}
+
 } // namespace __sanitizer
 
 #endif // SANITIZER_POSIX
Index: lib/tsan/rtl/tsan_interceptors.cc
===================================================================
--- lib/tsan/rtl/tsan_interceptors.cc
+++ lib/tsan/rtl/tsan_interceptors.cc
@@ -46,13 +46,6 @@
 #define mallopt(a, b)
 #endif
 
-#if SANITIZER_LINUX || SANITIZER_FREEBSD
-#define PTHREAD_CREATE_DETACHED 1
-#elif SANITIZER_MAC
-#define PTHREAD_CREATE_DETACHED 2
-#endif
-
-
 #ifdef __mips__
 const int kSigCount = 129;
 #else
@@ -928,8 +921,7 @@
     ThreadIgnoreEnd(thr, pc);
   }
   if (res == 0) {
-    int tid = ThreadCreate(thr, pc, *(uptr*)th,
-                           detached == PTHREAD_CREATE_DETACHED);
+    int tid = ThreadCreate(thr, pc, *(uptr*)th, IsStateDetached(detached));
     CHECK_NE(tid, 0);
     // Synchronization on p.tid serves two purposes:
     // 1. ThreadCreate must finish before the new thread starts.