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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/46909] [4.6 Regression] elf32-i386.c and elf64-x86-64.c in binutils are miscompiled
Date: Sun, 12 Dec 2010 19:22:00 -0000	[thread overview]
Message-ID: <bug-46909-4-C0Uucz5YbW@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-46909-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46909

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.12.12 19:22:15
     Ever Confirmed|0                           |1
           Severity|normal                      |blocker

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-12 19:22:15 UTC ---
[hjl@gnu-6 tmp]$ cat y.c
extern void abort ();
struct entry
{
  unsigned char tls_type;
} h;

int
__attribute__ ((__noinline__))
foo (struct entry *h)
{
  int tls_type = h->tls_type;
  if (! ((tls_type) == 4 || ((tls_type) == (2 | 4)))
      || ((tls_type) == 2 || ((tls_type) == (2 | 4))))
    return 1;

  return -1;
}

int
main ()
{
  struct entry h;
  h.tls_type = 6;
  if (foo (&h) != 1)
    abort ();
  return 0;
}
[hjl@gnu-6 tmp]$ /usr/gcc-4.6/bin/gcc -O2 y.c
[hjl@gnu-6 tmp]$ ./a.out 
Aborted
[hjl@gnu-6 tmp]$ gcc -O2 y.c
[hjl@gnu-6 tmp]$ ./a.out 
[hjl@gnu-6 tmp]$


  parent reply	other threads:[~2010-12-12 19:22 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-12 16:28 [Bug middle-end/46909] New: " hjl.tools at gmail dot com
2010-12-12 17:44 ` [Bug middle-end/46909] " hjl.tools at gmail dot com
2010-12-12 18:12 ` hjl.tools at gmail dot com
2010-12-12 19:22 ` hjl.tools at gmail dot com [this message]
2010-12-12 19:27 ` hjl.tools at gmail dot com
2010-12-12 19:30 ` jakub at gcc dot gnu.org
2010-12-12 21:29 ` [Bug middle-end/46909] [4.6 Regression] Logical OR expressions " hjl.tools at gmail dot com
2010-12-13 13:02 ` jakub at gcc dot gnu.org
2010-12-13 14:22 ` [Bug tree-optimization/46909] " jakub at gcc dot gnu.org
2010-12-14 14:10 ` jakub at gcc dot gnu.org
2010-12-14 14:32 ` jakub at gcc dot gnu.org

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