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[PATCH v3] Destructor support for C++11 thread_local variables -abilist entries


Hi,

Here is an updated patch based on feedback so far.  For context of this
change, please see the following thread:

http://sourceware.org/ml/libc-alpha/2012-10/msg00289.html

To summarize, this patch adds destructor support for the C++11
variables of the thread_local scope.  it adds a new function
__cxa_thread_atexit_impl, that libstdc++ calls to register destructors
for the thread_local objects it constructs.  The destructors will then
be called at either thread exit or program exit.  The current iteration
of the patch adds support to allow unloading a DSO that has
thread_local variables provided that all threads that constructed the
variables have exited and their destructors called.  This is
implemented by adding an extra field in struct link_map to count the
destructors that were registered, decrementing when a destructor is
called.

I have verified that the latter functionality works with the help of
the following program:

$ cat foo.cc:

#include "thread_local.h"
extern "C" void do_foo (void)
{
  thread_local A b;
}

$ cat thread_local.cc:

#include <dlfcn.h>
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include "thread_local.h"

int c;
int d;

void (*foo) (void);
pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;

void f()
{
  thread_local A a;
}

void *
load (void *u)
{
  pthread_mutex_lock (&m);
  void *h = dlopen ("./libfoo.so", RTLD_LAZY);
  foo = (void (*) (void)) dlsym(h, "do_foo");

  foo ();
  dlclose (h);
  pthread_mutex_unlock (&m);
}

void *
thr (void *u)
{
  /* wait till foo is initialized.  */
  while (!foo);   

  pthread_mutex_lock (&m);
  foo ();
  pthread_mutex_unlock (&m);
}

int main()
{

  pthread_t t, dsot;

  pthread_create (&t, NULL, thr, NULL);
  sleep (1);
  pthread_create (&dsot, NULL, load, NULL);

  pthread_join (t, NULL);
  pthread_join (dsot, NULL);
  printf ("%d, %d\n", c, d);
}

$ tls-g++ -g -fPIC -std=c++11 thread_local.cc -ldl -pthread
$ tls-g++ -fPIC -std=c++11 -shared -o libfoo.so foo.cc


Regards,
Siddhesh

ChangeLog:

	* include/link.h (struct link_map): New member l_tls_dtor_count.
	* include/stdlib.h (__cxa_thread_atexit_impl): Declare.
	(__call_tls_dtors): Likewise.
	* sysdeps/unix/sysv/linux/i386/nptl/libc.abilist: Add
	__cxa_thread_atexit_impl.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/nptl/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/nptl/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/sh/nptl/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/nptl/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/nptl/libc.abilist:
	Likewise.
	* stdlib/Makefile (routines): Add __cxa_thread_atexit_impl.
	* stdlib/Versions (GLIBC_2.17): Likewise.
	(GLIBC_PRIVATE): Add __call_tls_dtors.
	* stdlib/cxa_thread_atexit_impl.c: New file with helper function
	for libstdc++.
	* stdlib/exit.c (__run_exit_handlers): Call __call_tls_dtors.

nptl/ChangeLog:

	* pthread_create.c (start_thread): Call __call_tls_dtors.

ChangeLog.alpha:
2012-10-11  Siddhesh Poyarekar  <siddhesh@redhat.com>

	* sysdeps/unix/sysv/linux/alpha/nptl/libc.abilist: Add
	__cxa_thread_atexit_impl.


ChangeLog.arm:
2012-10-11  Siddhesh Poyarekar  <siddhesh@redhat.com>

	* sysdeps/unix/sysv/linux/arm/nptl/libc.abilist: Add
	__cxa_thread_atexit_impl.


ChangeLog.ia64:
2012-10-11  Siddhesh Poyarekar  <siddhesh@redhat.com>

	* sysdeps/unix/sysv/linux/ia64/nptl/libc.abilist: Add
	__cxa_thread_atexit_impl.


ChangeLog.m68k:
2012-10-11  Siddhesh Poyarekar  <siddhesh@redhat.com>

	* sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libc.abilist: Add
	__cxa_thread_atexit_impl.
	* sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libc.abilist:
	Likewise.


ChangeLog.mips:
2012-10-11  Siddhesh Poyarekar  <siddhesh@redhat.com>

	* sysdeps/unix/sysv/linux/mips/mips32/nptl/libc.abilist: Add
	__cxa_thread_atexit_impl.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libc.abilist:
	Likewise.
diff --git a/include/link.h b/include/link.h
index f0c8ad5..2e7147f 100644
--- a/include/link.h
+++ b/include/link.h
@@ -301,6 +301,9 @@ struct link_map
     /* Index of the module in the dtv array.  */
     size_t l_tls_modid;
 
+    /* Number of thread_local objects constructed by this DSO.  */
+    size_t l_tls_dtor_count;
+
     /* Information used to change permission after the relocations are
        done.  */
     ElfW(Addr) l_relro_addr;
diff --git a/include/stdlib.h b/include/stdlib.h
index d45b2f0..4387394 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -99,6 +99,10 @@ extern int __cxa_atexit (void (*func) (void *), void *arg, void *d);
 extern int __cxa_atexit_internal (void (*func) (void *), void *arg, void *d)
      attribute_hidden;
 
+extern int __cxa_thread_atexit_impl (void (*func) (void *), void *arg,
+				     void *d);
+extern void __call_tls_dtors (void);
+
 extern void __cxa_finalize (void *d);
 
 extern int __posix_memalign (void **memptr, size_t alignment, size_t size);
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c
index 197dfa7..34c0d30 100644
--- a/nptl/pthread_create.c
+++ b/nptl/pthread_create.c
@@ -311,6 +311,9 @@ start_thread (void *arg)
 #endif
     }
 
+  /* Call destructors for the thread_local TLS variables.  */
+  __call_tls_dtors ();
+
   /* Run the destructor for the thread-local data.  */
   __nptl_deallocate_tsd ();
 
diff --git a/ports/sysdeps/unix/sysv/linux/alpha/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/alpha/nptl/libc.abilist
index f8a3295..a694475 100644
--- a/ports/sysdeps/unix/sysv/linux/alpha/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/alpha/nptl/libc.abilist
@@ -1813,6 +1813,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/ports/sysdeps/unix/sysv/linux/arm/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/arm/nptl/libc.abilist
index 5523fdd..7fe5513 100644
--- a/ports/sysdeps/unix/sysv/linux/arm/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/arm/nptl/libc.abilist
@@ -80,6 +80,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.4
  GLIBC_2.4 A
diff --git a/ports/sysdeps/unix/sysv/linux/ia64/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/ia64/nptl/libc.abilist
index b73f5ca..0641368 100644
--- a/ports/sysdeps/unix/sysv/linux/ia64/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/ia64/nptl/libc.abilist
@@ -80,6 +80,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libc.abilist
index 9a92457..d13c993 100644
--- a/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libc.abilist
@@ -81,6 +81,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.4
  GLIBC_2.4 A
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libc.abilist
index fbcd208..b49279a 100644
--- a/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libc.abilist
@@ -1769,6 +1769,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libc.abilist
index 54e8d1a..bc30e5a 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libc.abilist
@@ -2244,4 +2244,5 @@ _gp_disp
  _gp_disp A
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libc.abilist
index 2a0e2a2..5cd77ab 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libc.abilist
@@ -1392,6 +1392,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libc.abilist
index 0e21194..2c61be9 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libc.abilist
@@ -1390,6 +1390,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libc.abilist
index 481162e..cfde8d2 100644
--- a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libc.abilist
@@ -1774,6 +1774,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
  __ppc_get_timebase_freq F
 GLIBC_2.2
diff --git a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libc.abilist
index 48f0c69..09b3aee 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libc.abilist
@@ -2082,4 +2082,5 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
diff --git a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libc.abilist
index 3aa70a1..f8d2190 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libc.abilist
@@ -2082,4 +2082,5 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
diff --git a/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libc.abilist b/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libc.abilist
index 48f0c69..09b3aee 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libc.abilist
+++ b/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libc.abilist
@@ -2082,4 +2082,5 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
diff --git a/stdlib/Makefile b/stdlib/Makefile
index a5318ee..d514bba 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -33,7 +33,7 @@ routines	:=							      \
 	bsearch qsort msort						      \
 	getenv putenv setenv secure-getenv				      \
 	exit on_exit atexit cxa_atexit cxa_finalize old_atexit		      \
-	quick_exit at_quick_exit cxa_at_quick_exit			      \
+	quick_exit at_quick_exit cxa_at_quick_exit cxa_thread_atexit_impl     \
 	abs labs llabs							      \
 	div ldiv lldiv							      \
 	mblen mbstowcs mbtowc wcstombs wctomb				      \
diff --git a/stdlib/Versions b/stdlib/Versions
index 250bd5f..50dec5d 100644
--- a/stdlib/Versions
+++ b/stdlib/Versions
@@ -105,6 +105,7 @@ libc {
   }
   GLIBC_2.17 {
     secure_getenv;
+    __cxa_thread_atexit_impl;
   }
   GLIBC_PRIVATE {
     # functions which have an additional interface since they are
@@ -114,5 +115,6 @@ libc {
     __abort_msg;
     # Used from other libraries
     __libc_secure_getenv;
+    __call_tls_dtors;
   }
 }
diff --git a/stdlib/cxa_thread_atexit_impl.c b/stdlib/cxa_thread_atexit_impl.c
new file mode 100644
index 0000000..4f03126
--- /dev/null
+++ b/stdlib/cxa_thread_atexit_impl.c
@@ -0,0 +1,108 @@
+/* Register destructors for C++ TLS variables declared with thread_local.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <stdlib.h>
+#include <ldsodefs.h>
+
+typedef void (*dtor_func) (void *);
+
+struct dtor_list
+{
+  dtor_func func;
+  void *obj;
+  struct link_map *map;
+  struct dtor_list *next;
+};
+
+static __thread struct dtor_list *tls_dtor_list;
+static __thread void *dso_handle_cache;
+static __thread struct link_map *lm_cache;
+
+/* Register a destructor for TLS variables declared with the 'thread_local'
+   keyword.  This function is only called from code generated by the C++
+   compiler.  */
+int
+__cxa_thread_atexit_impl (dtor_func func, void *obj, void *dso_handle)
+{
+  /* Prepend.  */
+  struct dtor_list *new = calloc (1, sizeof (struct dtor_list));
+  new->func = func;
+  new->obj = obj;
+  new->next = tls_dtor_list;
+  tls_dtor_list = new;
+
+  /* See if we already encountered the DSO.  */
+  __rtld_lock_lock_recursive (GL(dl_load_lock));
+
+  if (__builtin_expect (dso_handle_cache != dso_handle, 0))
+    {
+      ElfW(Addr) caller = (ElfW(Addr)) dso_handle;
+
+      /* If the address is not recognized the call comes from the main
+         program (we hope).  */
+      lm_cache = GL(dl_ns)[LM_ID_BASE]._ns_loaded;
+
+      /* Find the highest-addressed object that DSO_HANDLE is not below.  */
+      for (Lmid_t ns = 0; ns < GL(dl_nns); ++ns)
+        for (struct link_map *l = GL(dl_ns)[ns]._ns_loaded; l != NULL;
+             l = l->l_next)
+          if (caller >= l->l_map_start && caller < l->l_map_end
+              && (l->l_contiguous || _dl_addr_inside_object (l, caller)))
+            {
+              lm_cache = l;
+              break;
+            }
+
+    }
+  /* A destructor could result in a thread_local construction and the former
+     could have cleared the flag.  */
+  if (lm_cache->l_type == lt_loaded && lm_cache->l_tls_dtor_count == 0)
+    lm_cache->l_flags_1 |= DF_1_NODELETE;
+
+  new->map = lm_cache;
+  new->map->l_tls_dtor_count++;
+
+  __rtld_lock_unlock_recursive (GL(dl_load_lock));
+
+  return 0;
+}
+
+/* Call the destructors.  This is called either when a thread returns from the
+   initial function or when the process exits via the exit(3) function.  */
+void
+__call_tls_dtors (void)
+{
+  while (tls_dtor_list)
+    {
+      struct dtor_list *cur = tls_dtor_list;
+      tls_dtor_list = tls_dtor_list->next;
+
+      cur->func (cur->obj);
+
+      __rtld_lock_lock_recursive (GL(dl_load_lock));
+
+      /* Allow DSO unload if count drops to zero.  */
+      cur->map->l_tls_dtor_count--;
+      if (cur->map->l_tls_dtor_count == 0 && cur->map->l_type == lt_loaded)
+        cur->map->l_flags_1 &= ~DF_1_NODELETE;
+
+      __rtld_lock_unlock_recursive (GL(dl_load_lock));
+
+      free (cur);
+    }
+}
diff --git a/stdlib/exit.c b/stdlib/exit.c
index 1ad548f..78cb9f5 100644
--- a/stdlib/exit.c
+++ b/stdlib/exit.c
@@ -25,7 +25,6 @@
 #include "set-hooks.h"
 DEFINE_HOOK (__libc_atexit, (void))
 
-
 /* Call all functions registered with `atexit' and `on_exit',
    in the reverse of the order in which they were registered
    perform stdio cleanup, and terminate program execution with STATUS.  */
@@ -34,6 +33,9 @@ attribute_hidden
 __run_exit_handlers (int status, struct exit_function_list **listp,
 		     bool run_list_atexit)
 {
+  /* First, call the TLS destructors.  */
+  __call_tls_dtors ();
+
   /* We do it this way to handle recursive calls to exit () made by
      the functions registered with `atexit' and `on_exit'. We call
      everyone on the list and use the status value in the last
diff --git a/sysdeps/unix/sysv/linux/i386/nptl/libc.abilist b/sysdeps/unix/sysv/linux/i386/nptl/libc.abilist
index 0e8576f..cd0dc52 100644
--- a/sysdeps/unix/sysv/linux/i386/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/nptl/libc.abilist
@@ -1813,6 +1813,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist
index ab96361..2a8baff 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libc.abilist
@@ -1774,6 +1774,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
  __ppc_get_timebase_freq F
 GLIBC_2.2
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist
index a60b72a..c90c884 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libc.abilist
@@ -80,6 +80,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
  __ppc_get_timebase_freq F
 GLIBC_2.3
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libc.abilist
index ff0b82f..eec5ddc 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libc.abilist
@@ -1765,6 +1765,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libc.abilist
index 2fb0786..f043a08 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libc.abilist
@@ -86,6 +86,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist b/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist
index 3fd150e..9e64e10 100644
--- a/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist
@@ -86,6 +86,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libc.abilist
index 7d5a342..11361b2 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libc.abilist
@@ -1770,6 +1770,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libc.abilist
index 6d6e57c..4427822 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libc.abilist
@@ -91,6 +91,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2
  GLIBC_2.2 A
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/nptl/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/nptl/libc.abilist
index d6ab153..becaf18 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/nptl/libc.abilist
@@ -82,6 +82,7 @@ GLIBC_2.16
  timespec_get F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F
 GLIBC_2.2.5
  GLIBC_2.2.5 A
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libc.abilist
index 65bcead..8d45fc3 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libc.abilist
@@ -2080,4 +2080,5 @@ GLIBC_2.16
  xprt_unregister F
 GLIBC_2.17
  GLIBC_2.17 A
+ __cxa_thread_atexit_impl F
  secure_getenv F

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