Revert "glibc: add patch to fix segfault in forkpty"

This reverts commit 1747d28e5a.

Was fixed upstream in glibc 2.24

pkgs/development/libraries/glibc/common.nix

@@ -55,9 +55,6 @@ stdenv.mkDerivation ({
       ./cve-2016-1234.patch
       ./cve-2016-3706.patch
       ./fix_warnings.patch
-
-      # Fixes segfault when calling pty.fork() in python
-      ./forkpty.patch
     ];
 
   postPatch =

pkgs/development/libraries/glibc/forkpty.patch

@@ -1,75 +0,0 @@
-From f06f3f05b48c72e2c9b0fa78671f94fd22d67da8 Mon Sep 17 00:00:00 2001
-From: Florian Weimer <fweimer@redhat.com>
-Date: Wed, 1 Jun 2016 07:14:42 +0200
-Subject: [PATCH] fork in libpthread cannot use IFUNC resolver [BZ #19861]
-
-This commit only addresses the fork case, the vfork case has to be a
-tail call, which is why the generic code needs an IFUNC resolver
-there.
-
-diff --git a/nptl/pt-fork.c b/nptl/pt-fork.c
-index b65d6b4..db9b61d 100644
---- a/nptl/pt-fork.c
-+++ b/nptl/pt-fork.c
-@@ -25,33 +25,14 @@
-    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 __fork and fork symbols in
--   libpthread.so; so we define them using IFUNC to redirect to the libc
--   function.  */
-+   libpthread.so.
- 
--#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
--
--# if HAVE_IFUNC
--
--static __typeof (fork) *
--__attribute__ ((used))
--fork_resolve (void)
--{
--  return &__libc_fork;
--}
-+   With an IFUNC resolver, it would be possible to avoid the
-+   indirection, but the IFUNC resolver might run before the
-+   __libc_fork symbol has been relocated, in which case the IFUNC
-+   resolver would not be able to provide the correct address.  */
- 
--#  ifdef HAVE_ASM_SET_DIRECTIVE
--#   define DEFINE_FORK(name) \
--  asm (".set " #name ", fork_resolve\n" \
--       ".globl " #name "\n" \
--       ".type " #name ", %gnu_indirect_function");
--#  else
--#   define DEFINE_FORK(name) \
--  asm (#name " = fork_resolve\n" \
--       ".globl " #name "\n" \
--       ".type " #name ", %gnu_indirect_function");
--#  endif
--
--# else  /* !HAVE_IFUNC */
-+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_22)
- 
- static pid_t __attribute__ ((used))
- fork_compat (void)
-@@ -59,14 +40,10 @@ fork_compat (void)
-   return __libc_fork ();
- }
- 
--# define DEFINE_FORK(name) strong_alias (fork_compat, name)
--
--# endif  /* HAVE_IFUNC */
--
--DEFINE_FORK (fork_ifunc)
--compat_symbol (libpthread, fork_ifunc, fork, GLIBC_2_0);
-+strong_alias (fork_compat, fork_alias)
-+compat_symbol (libpthread, fork_alias, fork, GLIBC_2_0);
- 
--DEFINE_FORK (__fork_ifunc)
--compat_symbol (libpthread, __fork_ifunc, __fork, GLIBC_2_0);
-+strong_alias (fork_compat, __fork_alias)
-+compat_symbol (libpthread, __fork_alias, __fork, GLIBC_2_0);
- 
- #endif
--- 
-1.7.1
-