[Bug c++/17277] New: [AIX] could not catch an exception when specified -maix64

[Bug c++/17277] New: [AIX] could not catch an exception when specified -maix64

[masahiro at kasahara dot ws]

Exception handling seems completely broken when -maix64 option is specified.
I have tried with g++ version 3.4.0, 3.4.1, 3.4.2 20040829 (prerelease) 
respectively and got the same result. Following is a small test case.

  cleo% cat throw.cc
  #include <stdio.h>

  int main()
  {
    try{
      throw 1;
    } catch( int i ) {
      printf("catch\n");
    }
    return 0;
  }
  cleo% g++ -maix32 throw.cc -o throw; ./throw
  catch
  cleo% g++ -maix64 throw.cc -o throw; ./throw
  zsh: segmentation fault (core dumped)  ./throw

It works fine under -maix32 option, but when we want to compile in 64-bit mode
the compiled binary crushes just after throw. I used native ld and as (which
are the latest versions). The configure command line is

  ./configure --enable-languages=c,c++ --disable-nls

-- 
           Summary: [AIX] could not catch an exception when specified -
                    maix64
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: masahiro at kasahara dot ws
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-ibm-aix5.2.0.0
  GCC host triplet: powerpc-ibm-aix5.2.0.0
GCC target triplet: powerpc-ibm-aix5.2.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

[Bug target/17277] [AIX] could not catch an exception when specified -maix64

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-09-02 05:10 -------
hmm, the only thing remotely close to this is PR 13391 but that delt with shared libraries.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |target
           Keywords|                            |wrong-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

[Bug target/17277] [AIX] could not catch an exception when specified -maix64

[dje at gcc dot gnu dot org]

------- Additional Comments From dje at gcc dot gnu dot org  2004-09-09 17:09 -------
The correct TOC pointer is not being restored in the exception handler catch
block, so the call to __cxa_catch_begin in the shared library through glink code
is loading the function address from the wrong TOC.  The code works correctly in
32-bit mode and the algorithm is the same, so the failure is very suspicious.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Priority|P2                          |P1
   Last reconfirmed|0000-00-00 00:00:00         |2004-09-09 17:09:46
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

[Bug target/17277] [AIX] could not catch an exception when specified -maix64

[dje at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2004-09-09 17:09:46         |2004-09-09 17:10:26
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

[Bug target/17277] [AIX] could not catch an exception when specified -maix64

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-09-11 17:10 -------
Subject: Bug 17277

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	dje@gcc.gnu.org	2004-09-11 17:10:25

Modified files:
	gcc            : ChangeLog 
	gcc/config/rs6000: aix.h 

Log message:
	PR target/17277
	* config/rs6000/aix.h (MD_FROB_UPDATE_CONTEXT): Use __64BIT__ to
	choose 64-bit version.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.617&r2=2.2326.2.618
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/aix.h.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.43.4.2&r2=1.43.4.3



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

[Bug target/17277] [AIX] could not catch an exception when specified -maix64

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-09-11 17:11 -------
Subject: Bug 17277

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dje@gcc.gnu.org	2004-09-11 17:11:05

Modified files:
	gcc            : ChangeLog 

Log message:
	Add PR target/17277 to ChangeLog entry.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.5391&r2=2.5392



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

[Bug target/17277] [AIX] could not catch an exception when specified -maix64

[dje at gcc dot gnu dot org]

------- Additional Comments From dje at gcc dot gnu dot org  2004-09-11 17:11 -------
Fixed in GCC 3.4.3 and mainline.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |3.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

[Bug target/17277] [AIX] could not catch an exception when specified -maix64

[chandrakm at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=17277

Krishnamoorthy C <chandrakm at hotmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |chandrakm at hotmail dot com

--- Comment #6 from Krishnamoorthy C <chandrakm at hotmail dot com> ---
The exact same code/application compiles and runs fine on multiple OS's ( HP
UX, Windows , Red Hat etc ) , i am seeing the problem only on AIX 7.1

But when you say this problem could be something other than AIX 7.1, could it
be the environment variables, or a mismatch in the shared libs used. Btw, a
shared lib , compiled with gcc on AIX 7.1, but in C language is also being
used. 

Would you suggest using a lower verion of the gcc compiler what we used?