Index: lib/lsan/lsan_interceptors.cc
===================================================================
--- lib/lsan/lsan_interceptors.cc
+++ lib/lsan/lsan_interceptors.cc
@@ -19,6 +19,7 @@
 #include "sanitizer_common/sanitizer_flags.h"
 #include "sanitizer_common/sanitizer_internal_defs.h"
 #include "sanitizer_common/sanitizer_linux.h"
+#include "sanitizer_common/sanitizer_mac.h"
 #include "sanitizer_common/sanitizer_platform_interceptors.h"
 #include "sanitizer_common/sanitizer_platform_limits_posix.h"
 #include "sanitizer_common/sanitizer_tls_get_addr.h"
@@ -274,7 +275,7 @@
     attr = &myattr;
   }
   AdjustStackSize(attr);
-  int detached = 0;
+  int detached = PTHREAD_CREATE_JOINABLE;
   pthread_attr_getdetachstate(attr, &detached);
   ThreadParam p;
   p.callback = callback;
@@ -290,7 +291,8 @@
     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,
+                           detached == PTHREAD_CREATE_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_linux.h
===================================================================
--- lib/sanitizer_common/sanitizer_linux.h
+++ lib/sanitizer_common/sanitizer_linux.h
@@ -54,6 +54,9 @@
 #endif
 #endif  // SANITIZER_LINUX
 
+#define PTHREAD_CREATE_JOINABLE 0
+#define PTHREAD_CREATE_DETACHED 1
+
 // This class reads thread IDs from /proc/<pid>/task using only syscalls.
 class ThreadLister {
  public:
Index: lib/sanitizer_common/sanitizer_mac.h
===================================================================
--- lib/sanitizer_common/sanitizer_mac.h
+++ lib/sanitizer_common/sanitizer_mac.h
@@ -38,6 +38,9 @@
 
 }  // namespace __sanitizer
 
+#define PTHREAD_CREATE_JOINABLE 1
+#define PTHREAD_CREATE_DETACHED 2
+
 extern "C" {
 static char __crashreporter_info_buff__[__sanitizer::kErrorMessageBufferSize] =
   {};
Index: lib/tsan/rtl/tsan_interceptors.cc
===================================================================
--- lib/tsan/rtl/tsan_interceptors.cc
+++ lib/tsan/rtl/tsan_interceptors.cc
@@ -16,6 +16,7 @@
 #include "sanitizer_common/sanitizer_atomic.h"
 #include "sanitizer_common/sanitizer_libc.h"
 #include "sanitizer_common/sanitizer_linux.h"
+#include "sanitizer_common/sanitizer_mac.h"
 #include "sanitizer_common/sanitizer_platform_limits_posix.h"
 #include "sanitizer_common/sanitizer_placement_new.h"
 #include "sanitizer_common/sanitizer_stacktrace.h"
@@ -46,13 +47,6 @@
 #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
@@ -911,7 +905,7 @@
     pthread_attr_init(&myattr);
     attr = &myattr;
   }
-  int detached = 0;
+  int detached = PTHREAD_CREATE_JOINABLE;
   REAL(pthread_attr_getdetachstate)(attr, &detached);
   AdjustStackSize(attr);