commit cba5e8c2535f5950d1c78a6c35a2f83d549f37dc
Author: Jason Merrill <jason@redhat.com>
Date: Sat Jan 19 12:08:25 2013 -0500
* configure.ac: Check for __cxa_thread_atexit_impl.
* libsupc++/atexit_thread.cc (__cxa_thread_atexit): Just forward
to it if available.
* config.h.in, configure: Regenerate.
@@ -652,6 +652,9 @@
/* Define to 1 if you have the `_tanl' function. */
#undef HAVE__TANL
+/* Define to 1 if you have the `__cxa_thread_atexit_impl' function. */
+#undef HAVE___CXA_THREAD_ATEXIT_IMPL
+
/* Define as const if the declaration of iconv() needs const. */
#undef ICONV_CONST
@@ -26584,6 +26584,18 @@ $as_echo "#define HAVE_TLS 1" >>confdefs.h
fi
+ for ac_func in __cxa_thread_atexit_impl
+do :
+ ac_fn_c_check_func "$LINENO" "__cxa_thread_atexit_impl" "ac_cv_func___cxa_thread_atexit_impl"
+if test "x$ac_cv_func___cxa_thread_atexit_impl" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE___CXA_THREAD_ATEXIT_IMPL 1
+_ACEOF
+
+fi
+done
+
+
# For iconv support.
if test "X$prefix" = "XNONE"; then
@@ -235,6 +235,8 @@ if $GLIBCXX_IS_NATIVE; then
# For TLS support.
GCC_CHECK_TLS
+ AC_CHECK_FUNCS(__cxa_thread_atexit_impl)
+
# For iconv support.
AM_ICONV
@@ -26,6 +26,20 @@
#include <new>
#include "bits/gthr.h"
+#if HAVE___CXA_THREAD_ATEXIT_IMPL
+
+extern "C" int __cxa_thread_atexit_impl (void (*func) (void *),
+ void *arg, void *d);
+extern "C" int
+__cxxabiv1::__cxa_thread_atexit (void (*dtor)(void *),
+ void *obj, void *dso_handle)
+ _GLIBCXX_NOTHROW
+{
+ return __cxa_thread_atexit_impl (dtor, obj, dso_handle);
+}
+
+#else /* HAVE___CXA_THREAD_ATEXIT_IMPL */
+
namespace {
// One element in a singly-linked stack of cleanups.
struct elt
@@ -116,3 +130,5 @@ __cxxabiv1::__cxa_thread_atexit (void (*dtor)(void *), void *obj, void */*dso_ha
return 0;
}
+
+#endif /* HAVE___CXA_THREAD_ATEXIT_IMPL */