[Bug c++/19225] New: [3.4,4.0 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[Bug c++/19225] New: [3.4,4.0 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[ghazi at gcc dot gnu dot org]

When running the testsuite on i686-pc-linux-gnu using 3.4.x or mainline with 
either -fpic or -fPIC, I get an execution failure in g++.dg/eh/omit-frame-
pointer2.C as shown here:
http://gcc.gnu.org/ml/gcc-testresults/2005-01/msg00085.html
http://gcc.gnu.org/ml/gcc-testresults/2005-01/msg00084.html

When running the testcase under 3.3.x it passes so this is a regression as of 
3.4.x.

-- 
           Summary: [3.4,4.0 regression] g++.dg/eh/omit-frame-pointer2.C
                    fails with -fpic/-fPIC on i686-pc-linux-gnu
           Product: gcc
           Version: 3.4.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ghazi at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |middle-end
           Keywords|                            |EH, wrong-code
            Summary|[3.4,4.0 regression]        |[3.4/4.0 regression]
                   |g++.dg/eh/omit-frame-       |g++.dg/eh/omit-frame-
                   |pointer2.C fails with -     |pointer2.C fails with -
                   |fpic/-fPIC on i686-pc-linux-|fpic/-fPIC on i686-pc-linux-
                   |gnu                         |gnu
   Target Milestone|---                         |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-03-21 21:58 -------
*** Bug 20581 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dalej at apple dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-03-21 21:59 -------
>From PR 20581:
"The following is a slightly modified version of g++.dg/eh/omit-frame-pointer2.C.
It fails with -O -fomit-frame-pointer -mno-accumulate-outgoing-args -fpic (you
need all flags).  Basic problem is that there are 24 bytes on the stack at the point of
the call to f2, which throws, but the code following the landing pad only pops 12 of
them, so the return from f1 does not pick up the right address.  The unwinder could 
in principle adjust SP to compensate, but it doesn't; there seems to be sufficient info 
in the tables to do this, but no such code in the unwinder.  I am unsure just how this 
is supposed to work.
// Reduced from PR c++/5246, PR c++/2447
// { dg-options "-O -fomit-frame-pointer" }
// { dg-options "-O -fomit-frame-pointer -mno-accumulate-outgoing-args" { target i?86-*-* } }
// { dg-do run }

void *sp;

void step (int)
{
  sp = __builtin_alloca (0);
}

void f2 (void)
{
  step (2);
  throw int();
}

void f1 (void)
{
  try
    {
      step (1);
      f2 ();
      step (-1);
    }
  catch (int)
    {
      step (3);
    }
}

int main ()
{
  f1 ();
  return 0;
}

"

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2005-03-24 18:26 -------
RTH, any thoughts as to how this is supposed to work?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[wilson at gcc dot gnu dot org]

------- Additional Comments From wilson at gcc dot gnu dot org  2005-03-24 20:37 -------
See
    http://gcc.gnu.org/ml/gcc/2005-03/msg01081.html

This fails because exception handling and -fdefer-pop don't work well together.
 The easy solution is to disable the defer pop optimization when we have
function calls that can throw.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[dalej at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |dalej at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2005-02-02 21:00:35         |2005-03-25 00:01:16
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-03-28 20:48 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2005-03/msg02530.html>.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-03-30 20:21 -------
Subject: Bug 19225

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dalej@gcc.gnu.org	2005-03-30 20:21:39

Modified files:
	gcc            : ChangeLog calls.c 

Log message:
	2005-03-30  Dale Johannesen  <dalej@apple.com>
	
	PR middle-end/19225
	* calls.c (expand_call):  Flush pending deferrals before
	throwing call.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8037&r2=2.8038
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/calls.c.diff?cvsroot=gcc&r1=1.384&r2=1.385



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[dalej at gcc dot gnu dot org]

------- Additional Comments From dalej at gcc dot gnu dot org  2005-03-30 20:27 -------
Fixed (4.1 only)


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.4                       |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0/4.1 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2005-04-04 22:47 -------
(Bugs should not be marked as FIXED, nor the target milestone moved, so long as
they are still open against 3.4 or later, unless it has been decided that they
will not be fixed there, so I've reopened this one.)

Dale, is there any reason that you do not think it's appropriate to apply this
patch to the release branches?  If not, please apply.

Thanks,

-- Mark

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |
   Target Milestone|4.1.0                       |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4/4.0 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-06 01:13 -------
Subject: Bug 19225

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	dalej@gcc.gnu.org	2005-04-06 01:11:42

Modified files:
	gcc            : ChangeLog calls.c 

Log message:
	2005-04-05  Dale Johannesen  <dalej@apple.com>
	
	PR middle-end/19225
	* calls.c (expand_call):  Flush pending deferrals before
	throwing call.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.133&r2=2.7592.2.134
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/calls.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.378.8.1&r2=1.378.8.2



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-06 21:02 -------
Subject: Bug 19225

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	dalej@gcc.gnu.org	2005-04-06 21:01:53

Modified files:
	gcc            : ChangeLog calls.c 

Log message:
	2005-04-06  Dale Johannesen  <dalej@apple.com>
	
	PR middle-end/19225
	* calls.c (expand_call):  Flush pending deferrals before
	throwing call.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.834&r2=2.2326.2.835
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/calls.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.315.2.7&r2=1.315.2.8



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225

[Bug middle-end/19225] [3.4 regression] g++.dg/eh/omit-frame-pointer2.C fails with -fpic/-fPIC on i686-pc-linux-gnu

[dalej at gcc dot gnu dot org]

------- Additional Comments From dalej at gcc dot gnu dot org  2005-04-06 21:02 -------
Also fixed in 4.0 and 3.4 branches.  Closing.



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19225