libstdc++: Add _Exit to <stdlib.h> for freestanding

When I added std::_Exit to the freestanding declarations in <cstdlib> I
should also have added it to <stdlib.h>.

libstdc++-v3/ChangeLog:

	* include/c_compatibility/stdlib.h [!_GLIBCXX_HOSTED]: Add
	using-declaration for _Exit.

diff --git a/libstdc++-v3/include/c_compatibility/stdlib.h b/libstdc++-v3/include/c_compatibility/stdlib.h
index 377b910..70fa4c8 100644 (file)
--- a/libstdc++-v3/include/c_compatibility/stdlib.h
+++ b/libstdc++-v3/include/c_compatibility/stdlib.h
@@ -45,6 +45,9 @@ using std::exit;
 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
   using std::quick_exit;
 # endif
+# if _GLIBCXX_USE_C99_STDLIB
+  using std::_Exit;
+# endif
 #endif
 
 #if _GLIBCXX_HOSTED