Re: [Libunwind-devel] libunwind on x86-64 w/ C++ exceptions

[Mark Rabkin]

I'm glad you can reproduce the static version!  

Here's as many relevant specs as I can think of:

$ gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,java,f95,ada --enable-java-awt=gtk --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --host=x86_64-redhat-linux
Thread model: posix
gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)

$ ls -l /lib64/libc-*
-rwxr-xr-x  1 root root 1553232 May 30  2005 /lib64/libc-2.3.5.so*

$ ls -l /usr/lib64/*c++*
lrwxrwxrwx  1 root root     18 Sep 10 07:48 /usr/lib64/libstdc++.so.6 -> libstdc++.so.6.0.5*
-rwxr-xr-x  1 root root 975736 Jul 27  2005 /usr/lib64/libstdc++.so.6.0.5*

$ ldd unwind-shared
       libunwind.so.7 => /home/mrabkin/unwind/lib/libunwind.so.7 (0x00002aaaaaaad000)
        libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x0000003bd9500000)
        libm.so.6 => /lib64/libm.so.6 (0x0000003bd8d00000)
        libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000003bd9800000)
        libc.so.6 => /lib64/libc.so.6 (0x0000003bd8800000)
        /lib64/ld-linux-x86-64.so.2 (0x0000003bd8600000)

- Mark

On 2/15/08 4:58 PM, "Arun Sharma" <address@hidden> wrote:

> On Fri, Feb 15, 2008 at 4:25 PM, Mark Rabkin <address@hidden> wrote:
> > $ gdb unwind
> > Program received signal SIGABRT, Aborted.
> >
> > #0  0x0000003bd882f3b0 in raise () from /lib64/libc.so.6
> > #1  0x0000003bd8830860 in abort () from /lib64/libc.so.6
> > #2  0x0000003bd95bb8c1 in __cxa_get_globals () from /usr/lib64/libstdc++.so.6
> > #3  0x0000003bd95bb9b4 in __cxa_get_globals () from /usr/lib64/libstdc++.so.6
> > #4  0x0000003bd95bbd07 in __gxx_personality_v0 ()
> >    from /usr/lib64/libstdc++.so.6
> > #5  0x000000000040100b in _Unwind_Resume (exception_object=0x517060)
> >     at unwind/unwind-internal.h:118
> > #6  0x0000000000400e84 in throw_int () at unwind.cpp:7
> > #7  0x0000000000400e98 in main (argc=1, argv=0x7ffffffcb818) at unwind.cpp:12
>
> I can reproduce this one.
>  
> > $ ./unwind-shared
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > _x86_64_setcontext () at x86_64/setcontext.S:34
> > 34              fldenv (%r8)
>  
>
> But not this one. Which version of gcc are you using?
>
>  -Arun