Re: cross compiler gcc 4.2.3 for FreeBSD 10

["alexander dot bubnov at gmail dot com" <alexander dot bubnov at gmail dot com>]

Hello!
If I build toolchain based on gcc 4.6.3 compiler it works fine and
catching exceptions does not lead to abort() call.

2014-10-16 15:30 GMT+04:00 alexander.bubnov@gmail.com
<alexander.bubnov@gmail.com>:
> Hello!
> I have compiled cross compiler gcc 4.2.3 for FreeBSD using
> binutils-2.17.50. To compiler that compiler I used gcc 4.4.3 compiler.
>
> Before that I patched files removing freebsd1* and freebsd[1... and
> freebsd[[1 if/case. It is well known problem which I found in
> Changelog of gcc 4.6.3
>
> binutils-2.17.5/ld/configure
> binutils-2.17.5/gas/configure
> binutils-2.17.5/gprof/configure
> binutils-2.17.5/opcodes/configure
> binutils-2.17.5/configure
> binutils-2.17.5/binutils/configure
> binutils-2.17.5/bfd/configure
> binutils-2.17.5/config.rpath
> binutils-2.17.5/libtool.m4
> binutils-2.17.5/ld/configure.host
> binutils-2.17.5/ld/configure.tgt
> binutils-2.17.5/bfd/config.bfd
> binutils-2.17.5/bfd/configure
>
> gcc-4.2.3/boehm-gc/configure
> gcc-4.2.3/configure
> gcc-4.2.3/fixincludes/configure
> gcc-4.2.3/gcc/configure
> gcc-4.2.3/gnattools/configure
> gcc-4.2.3/intl/configure
> gcc-4.2.3/libada/configure
> gcc-4.2.3/libcpp/configure
> gcc-4.2.3/libdecnumber/configure
> gcc-4.2.3/libffi/configure
> gcc-4.2.3/libgfortran/configure
> gcc-4.2.3/libgomp/configure
> gcc-4.2.3/libiberty/configure
> gcc-4.2.3/libjava/classpath/configure
> gcc-4.2.3/libjava/configure
> gcc-4.2.3/libjava/libltdl/configure
> gcc-4.2.3/libmudflap/configure
> gcc-4.2.3/libobjc/configure
> gcc-4.2.3/libssp/configure
> gcc-4.2.3/libstdc++-v3/configure
> gcc-4.2.3/zlib/configure
> gcc compiler built with no errors.
>
> Next I tried to compile a simple example of c++ code
>
> int main()
> {
>         try
>         {
>                 throw 10;
>         }
>         catch(...)
>         {
>                 return 1;
>         }
>
>         return 0;
> }
> But I got a coredump
>
> root@:~ # ./42.out
> Abort (core dumped)
> root@:~ # ldd ./42.out
> ./42.out:
>         libstdc++.so.6 => /root/4.2/libstdc++.so.6 (0x28069000)
>         libm.so.5 => /lib/libm.so.5 (0x28155000)
>         libgcc_s.so.1 => /root/4.2/libgcc_s.so.1 (0x28177000)
>         libc.so.7 => /lib/libc.so.7 (0x28185000)
>
> root@:~ # gdb 42.out 42.out.core
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 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-marcel-freebsd"...(no debugging
> symbols found)...
> Attaching to program: /root/42.out, process 42
> ptrace: No such process.
> Core was generated by `42.out'.
> Program terminated with signal 6, Aborted.
> Reading symbols from /root/4.2/libstdc++.so.6...done.
> Loaded symbols for /root/4.2/libstdc++.so.6
> Reading symbols from /lib/libm.so.5...done.
> Loaded symbols for /lib/libm.so.5
> Reading symbols from /root/4.2/libgcc_s.so.1...done.
> Loaded symbols for /root/4.2/libgcc_s.so.1
> Reading symbols from /lib/libc.so.7...done.
> Loaded symbols for /lib/libc.so.7
> Reading symbols from /libexec/ld-elf.so.1...done.
> Loaded symbols for /libexec/ld-elf.so.1
> #0  0x282afed7 in kill () from /lib/libc.so.7
> (gdb) bt
> #0  0x282afed7 in kill () from /lib/libc.so.7
> #1  0x282afe67 in raise () from /lib/libc.so.7
> #2  0x282ae8a6 in abort () from /lib/libc.so.7
> #3  0x28180078 in uw_init_context_1 (context=0xbfbfdb68,
> outer_cfa=0xbfbfdc10, outer_ra=0x281214f1) at
> ../../gcc/unwind-dw2.c:1413
> #4  0x281804e2 in _Unwind_RaiseException (exc=0x28803070) at unwind.inc:92
> #5  0x281214f1 in __cxa_throw (obj=0x28803090, tinfo=0x80499a0,
> dest=0) at ../../../../libstdc++-v3/libsupc++/eh_throw.cc:71
> #6  0x08048770 in main ()
>
> part of gcc/unwind-dw2.c:1413
> ...
>   code = uw_frame_state_for (context, &fs);
>   gcc_assert (code == _URC_NO_REASON); <--- line 14, here I got code
> == _URC_END_OF_STACK
> ...
>
> Then I linked libgcc and libstdc++ statically
>
> root@:~ # ldd 42.out
> 42.out:
>         libm.so.5 => /lib/libm.so.5 (0x2807c000)
>         libc.so.7 => /lib/libc.so.7 (0x2809e000)
>
> But the problem was reproducted again
>
> root@:~ # ./42.out
> Abort (core dumped)
>
> With the same stack trace
>
> root@:~ # gdb 42.out 42.out.core
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 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-marcel-freebsd"...
> Attaching to program: /root/42.out, process 42
> ptrace: No such process.
> Core was generated by `42.out'.
> Program terminated with signal 6, Aborted.
> Reading symbols from /lib/libm.so.5...done.
> Loaded symbols for /lib/libm.so.5
> Reading symbols from /lib/libc.so.7...done.
> Loaded symbols for /lib/libc.so.7
> Reading symbols from /libexec/ld-elf.so.1...done.
> Loaded symbols for /libexec/ld-elf.so.1
> #0  0x281c8ed7 in kill () from /lib/libc.so.7
> (gdb) bt
> #0  0x281c8ed7 in kill () from /lib/libc.so.7
> #1  0x281c8e67 in raise () from /lib/libc.so.7
> #2  0x281c78a6 in abort () from /lib/libc.so.7
> #3  0x08056268 in uw_init_context_1 (context=0xbfbfdb68,
> outer_cfa=0xbfbfdc10, outer_ra=0x804d537) at
> ../../gcc/unwind-dw2.c:1413
> #4  0x080566d2 in _Unwind_RaiseException (exc=0x28803070) at unwind.inc:92
> #5  0x0804d537 in __cxa_throw (obj=0x28803090, tinfo=0x805c480,
> dest=0) at ../../../../libstdc++-v3/libsupc++/eh_throw.cc:71
> #6  0x080492c0 in main ()
>
> Can you please tell me where to dig to get workable compiler?
>
> --
> /BR, Alexander



-- 
/BR, Alexander