[Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|i?86-*-linux-gnu            |i686-*-linux-gnu
           Priority|P3                          |P2
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-11-19
     Ever confirmed|0                           |1

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Paul Pluzhnikov from comment #3)
> > I cannot reproduce this with 4.8 or trunk on a x86_64 host.
> 
> Strange: the crash reproduces for me using multiple independent builds of
> trunk on x86_64, configured as:
> 
> ../configure --prefix /tmp/gcc-svn-install --enable-linker-build-id
> --disable-lto --with-linker-hash-style=gnu --disable-libstdcxx-pch
> --enable-languages=c,c++
> 
> Also reproduced using a clean gcc-4_8 branch as of 2 weeks ago:
> gcc (GCC) 4.8.2 20131012 (prerelease), configured similarly:
> ../configure --prefix /tmp/gcc-svn-4.8-install --enable-languages=c,c++
> --enable-linker-build-id --with-linker-hash-style=gnu --disable-lto
> 
> t.cc: In member function 'void L::compute()':
> t.cc:69:1: internal compiler error: in connect_traces, at dwarf2cfi.c:2676
>  }
>  ^
> 0x6a5ee7 connect_traces
> 	../../gcc/dwarf2cfi.c:2676
> 0x6a5ee7 execute_dwarf2_frame
> 	../../gcc/dwarf2cfi.c:2898
> 
> 
> 
> I just repeated a build on a clean gcc-4.8:
>   URL: svn+ssh://ppluzhnikov@gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch
>   Revision: 204069
> with exactly the same outcome.
> 
> 
> You are using '-Os -m32', right?

Yes.  Ah, it breaks with -march=i686 but works with -march=i586.

Confirmed.