Index: boost/thread/detail/tss_hooks.hpp
===================================================================
--- boost/thread/detail/tss_hooks.hpp	(revision 41287)
+++ boost/thread/detail/tss_hooks.hpp	(working copy)
@@ -30,7 +30,7 @@
 
 #if defined(BOOST_HAS_WINTHREADS)
 
-    extern "C" BOOST_THREAD_DECL void on_process_enter(void);
+    extern "C" BOOST_THREAD_DECL void __cdecl on_process_enter(void);
         //Function to be called when the exe or dll
             //that uses Boost.Threads first starts
             //or is first loaded.
@@ -40,7 +40,7 @@
             //a method for doing so has been discovered.
         //May be omitted; may be called multiple times.
 
-    extern "C" BOOST_THREAD_DECL void on_process_exit(void);
+    extern "C" BOOST_THREAD_DECL void __cdecl on_process_exit(void);
         //Function to be called when the exe or dll
             //that uses Boost.Threads first starts
             //or is first loaded.
@@ -50,7 +50,7 @@
             //a method for doing so has been discovered.
         //Must not be omitted; may be called multiple times.
 
-    extern "C" BOOST_THREAD_DECL void on_thread_enter(void);
+    extern "C" BOOST_THREAD_DECL void __cdecl on_thread_enter(void);
         //Function to be called just after a thread starts
             //in an exe or dll that uses Boost.Threads.
         //Must be called in the context of the thread
@@ -59,7 +59,7 @@
             //a method for doing so has been discovered.
         //May be omitted; may be called multiple times.
 
-    extern "C" BOOST_THREAD_DECL void on_thread_exit(void);
+    extern "C" BOOST_THREAD_DECL void __cdecl on_thread_exit(void);
         //Function to be called just be fore a thread ends
             //in an exe or dll that uses Boost.Threads.
         //Must be called in the context of the thread
Index: libs/thread/src/win32/thread.cpp
===================================================================
--- libs/thread/src/win32/thread.cpp	(revision 41287)
+++ libs/thread/src/win32/thread.cpp	(working copy)
@@ -533,16 +533,16 @@
 }
 
 
-extern "C" BOOST_THREAD_DECL void on_process_enter()
+extern "C" BOOST_THREAD_DECL void __cdecl on_process_enter()
 {}
 
-extern "C" BOOST_THREAD_DECL void on_thread_enter()
+extern "C" BOOST_THREAD_DECL void __cdecl on_thread_enter()
 {}
 
-extern "C" BOOST_THREAD_DECL void on_process_exit()
+extern "C" BOOST_THREAD_DECL void __cdecl on_process_exit()
 {}
 
-extern "C" BOOST_THREAD_DECL void on_thread_exit()
+extern "C" BOOST_THREAD_DECL void __cdecl on_thread_exit()
 {
     boost::run_thread_exit_callbacks();
 }
Index: libs/thread/src/win32/tss_pe.cpp
===================================================================
--- libs/thread/src/win32/tss_pe.cpp	(revision 41287)
+++ libs/thread/src/win32/tss_pe.cpp	(working copy)
@@ -91,11 +91,11 @@
     #if (_MSC_VER < 1300) // 1300 == VC++ 7.0
         typedef void (__cdecl *_PVFV)(void);
         #define INIRETSUCCESS
-        #define PVAPI void
+        #define PVAPI void __cdecl
     #else
         typedef int (__cdecl *_PVFV)(void);
         #define INIRETSUCCESS 0
-        #define PVAPI int
+        #define PVAPI int __cdecl
     #endif
 
     typedef void (NTAPI* _TLSCB)(HINSTANCE, DWORD, PVOID);