--- stdcxx-4.2.1/src/tmpbuf.cpp	2008-04-24 17:25:19.000000000 -0700

+++ stdcxx-4.2.1/src/tmpbuf.cpp	2011-03-22 15:16:51.692183430 -0700

@@ -40,31 +40,28 @@

 typedef char _CharBuf [_RWSTD_TMPBUF_SIZE + !_RWSTD_TMPBUF_SIZE];

 // use `aligned_buffer' to guarantee proper buffer alignment

-static _RWSTD_THREAD __rw_aligned_buffer<_CharBuf>

-__rw_buffer;

-

-static _RWSTD_THREAD unsigned long

-__rw_buffer_busy /* = 0 */;   // > 0 when buffer in use

+static _RWSTD_THREAD __rw_aligned_buffer<_CharBuf> __rw_buffer;

+// > 0 when buffer in use

+static _RWSTD_THREAD unsigned long __rw_buffer_busy = 0UL;

 // extern "C" to avoid binary incompatibility due to changes

 // in function arguments (e.g., their sign)

 extern "C" {

-

 // used by std::get_temporary_buffer<>()

 _RWSTD_EXPORT _RWSTD_SIZE_T

 __rw_tmpbuf (void **pptr, _RWSTD_PTRDIFF_T nelems, _RWSTD_SIZE_T size)

 {

-    _RWSTD_ASSERT (0 != pptr);

-    _RWSTD_ASSERT (0 != size);

+    if ((0UL == pptr) || (0 == size))

+	return 0;

     // detect overflow and fail

     _RWSTD_SIZE_T nbytes = nelems * size;

-    if (   nelems < 0

-        || nbytes / size != _RWSTD_STATIC_CAST (_RWSTD_SIZE_T, nelems)

-        || nelems && nbytes / nelems != size) {

+    if (   (nelems < 0)

+        || ((nbytes / size) != _RWSTD_STATIC_CAST (_RWSTD_SIZE_T, nelems))

+        || ((nelems > 0) && ((nbytes / nelems) != size))) {

         *pptr = 0;

         return 0;

     }