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[pushed] libitm: Fix bootstrap for targets without HAVE_ELF_STYLE_WEAKREF.

Message ID 20211126194337.37758-1-iain@sandoe.co.uk
State Committed
Commit caa04517e6f78a562f36897a6e7171f0121101b4
Headers show
Series [pushed] libitm: Fix bootstrap for targets without HAVE_ELF_STYLE_WEAKREF. | expand

Commit Message

Iain Sandoe Nov. 26, 2021, 7:43 p.m. UTC
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.

tested on i686, x86_64, powerpc-darwin and x86_64-linux.
pushed to master as bootstrap/trivial fix, thanks

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


	* 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.
 libitm/eh_cpp.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/libitm/eh_cpp.cc b/libitm/eh_cpp.cc
index 4909427b405..57beb1a147f 100644
--- 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 (
+      __cxa_get_globals != NULL &&
+      __cxa_get_globals () != 0)
     cxa_uncaught_count_ptr = &__cxa_get_globals ()->uncaughtExceptions;
     cxa_uncaught_count_ptr = 0;