libitm: Fix bootstrap for targets without HAVE_ELF_STYLE_WEAKREF.

Recent improvements to null address warnings notice that for
targets that do not support HAVE_ELF_STYLE_WEAKREF the dummy stub
implementation of __cxa_get_globals() means that the address can
never be null.

Fixed by removing the test for such targets.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
libitm/ChangeLog:

	* eh_cpp.cc (GTM::gtm_thread::init_cpp_exceptions): If the
	target does not support HAVE_ELF_STYLE_WEAKREF then do not
	try to test the __cxa_get_globals against NULL.

diff --git a/libitm/eh_cpp.cc b/libitm/eh_cpp.cc
index 4909427..57beb1a 100644 (file)
--- a/libitm/eh_cpp.cc
+++ b/libitm/eh_cpp.cc
@@ -178,7 +178,11 @@ GTM::gtm_thread::init_cpp_exceptions ()
 {
   // Only save and restore the number of uncaught exceptions if this is
   // actually used in the program.
-  if (__cxa_get_globals != NULL && __cxa_get_globals () != 0)
+  if (
+#if HAVE_ELF_STYLE_WEAKREF
+      __cxa_get_globals != NULL &&
+#endif
+      __cxa_get_globals () != 0)
     cxa_uncaught_count_ptr = &__cxa_get_globals ()->uncaughtExceptions;
   else
     cxa_uncaught_count_ptr = 0;