stockage local fil sur segfaults NetBSD seulement?

Question

Essayer de lancer un programme C ++ , je reçois la segmentation les défauts qui semblent être spécifiques à NetBSD. Bert Hubert a écrit programme de test simple (à la fin de ce message) et, en effet, il se bloque que sur NetBSD.

% uname -a
NetBSD golgoth 5.0.1 NetBSD 5.0.1 (GENERIC) #0: Thu Oct  1 15:46:16 CEST 2009
+stephane@golgoth:/usr/obj/sys/arch/i386/compile/GENERIC i386

% g++ --version
g++ (GCC) 4.1.3 20080704 prerelease (NetBSD nb2 20081120)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

% gdb thread-local-storage-powerdns
GNU gdb 6.5
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386--netbsdelf"...
(gdb) run
Starting program: /home/stephane/Programmation/C++/essais/thread-local-storage-powerdns

Program received signal SIGSEGV, Segmentation fault.
0x0804881b in main () at thread-local-storage-powerdns.cc:20
20        t_a = new Bogo('a');
(gdb)

Sur les autres Unix, il fonctionne très bien. Y at-il un problème connu dans NetBSD C de stockage de fil local?

#include <stdio.h>


class Bogo
{
public:

  explicit Bogo(char a)
  {
 d_a = a;
  }

  char d_a;
};

__thread Bogo* t_a;

int main()
{
  t_a = new Bogo('a');

  Bogo* b = t_a;

  printf("%c\n", b->d_a);
}

Answer 1

NetBSD ne supporte pas le stockage local des threads. La plupart des autres font cependant BSDs.