1 files changed, 60 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/pt-longjmp.c b/REORG.TODO/nptl/pt-longjmp.c
new file mode 100644
index 0000000000..2ef757e687
--- /dev/null
+++ b/REORG.TODO/nptl/pt-longjmp.c
@@ -0,0 +1,60 @@
+/* ABI compatibility for 'longjmp' and 'siglongjmp' symbols in libpthread ABI.
+   Copyright (C) 2002-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <setjmp.h>
+#include <shlib-compat.h>
+
+/* libpthread once had its own longjmp (and siglongjmp alias), though there
+   was no apparent reason for it.  There is no use in having a separate
+   symbol in libpthread, but the historical ABI requires it.  For static
+   linking, there is no need to provide anything here--the libc version
+   will be linked in.  For shared library ABI compatibility, there must be
+   longjmp and siglongjmp symbols in libpthread.so; so we define them using
+   IFUNC to redirect to the libc function.  */
+
+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
+
+# if HAVE_IFUNC
+
+#  undef INIT_ARCH
+#  define INIT_ARCH()
+#  define DEFINE_LONGJMP(name) libc_ifunc (name, &__libc_longjmp)
+
+extern __typeof(longjmp) longjmp_ifunc;
+extern __typeof(siglongjmp) siglongjmp_ifunc;
+
+# else  /* !HAVE_IFUNC */
+
+static void __attribute__ ((noreturn, used))
+longjmp_compat (jmp_buf env, int val)
+{
+  __libc_longjmp (env, val);
+}
+
+# define DEFINE_LONGJMP(name) strong_alias (longjmp_compat, name)
+
+# endif  /* HAVE_IFUNC */
+
+DEFINE_LONGJMP (longjmp_ifunc)
+compat_symbol (libpthread, longjmp_ifunc, longjmp, GLIBC_2_0);
+
+strong_alias (longjmp_ifunc, siglongjmp_ifunc)
+compat_symbol (libpthread, siglongjmp_ifunc, siglongjmp, GLIBC_2_0);
+
+#endif