Bug#105569: [mips/mipsel] g++ exception catching does not work...

[Philippe Troin <phil@fifi.org>]

Package: g++
Version: 2.95.x

The following program breaks on mips and mipsel:

  #include <stdio.h>
  
  class shex {
    public:
      shex();
      ~shex();
      shex(const shex&);
      shex& operator=(const shex&);
  };
  
  shex::shex()
  {
      printf("creating new shex @%p\n", this);
  }
  shex::shex(const shex& that)
  {
      printf("creating new shex @%p from %p\n", this, &that);
  }
  shex& shex::operator=(const shex& that)
  {
      printf("copying shex from %p to %p\n", &that, this);
      return *this;
  }
  shex::~shex()
  {
      printf("destroying shex @%p\n", this);
  }
  
  int main()
  {
     try {
       throw shex();
     } catch(const shex&) {
       printf("Caught shex (ok)\n");
     } catch(...) {
       printf("Caught unknown exception (BAD)\n");
     }
     return 0;
  }

phil@resume:~/shtest% uname -a
Linux resume.rfc822.org 2.4.2 #8 Sun Apr 1 20:56:43 CEST 2001 mips unknown
phil@resume:~/shtest% dpkg --print-architecture
mips
phil@resume:~/shtest% dpkg -l g++
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  g++            2.95.4-4       The GNU C++ compiler.
phil@resume:~/shtest% g++ -Wall -W -o catchfails catchfails.cpp
phil@resume:~/shtest% ./catchfails 
creating new shex @0x7fff7958
creating new shex @0x10000228 from 0x7fff7958
destroying shex @0x7fff7958
zsh: 17066 segmentation fault  ./catchfails
phil@resume:~/shtest% 


phil@repeat:~$ uname -a
Linux repeat.rfc822.org 2.4.1 #2 Thu Apr 5 02:26:22 CEST 2001 mips unknown
phil@repeat:~$ dpkg --print-architecture
mipsel
phil@repeat:~$ dpkg -l g++
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  g++            2.95.3-7       The GNU C++ compiler.
phil@repeat:~$ g++ -Wall -W -o catchfails catchfails.cpp 
phil@repeat:~$ ./catchfails 
creating new shex @0x7fff7c98
creating new shex @0x10000228 from 0x7fff7c98
destroying shex @0x7fff7c98
Segmentation fault
phil@repeat:~$ 

Phil.