[erlang-bugs] gcc bug triggered by compiling R14B02 (not an erlang bug per se)

[Mikael Pettersson]

Matthias Lang writes:
 > Hi,
 > 
 > > I'm unable to reproduce this with either gcc-4.5.2 or gcc-4.5-20110421,
 > > both vanilla unpatched FSF sources, on an x86-64 box running Fedora 13.
 > > Looks like a Debian bug to me.
 > 
 > Thanks, agree.
 > 
 > I glanced at Debian's patches, but they're 200k lines long. Did not
 > feel like digging through that to try and understand what they've
 > done. Feels like "report and forget" time.
 > 
 > Anything more than the rest of this mail I should send to Debian?
 > 
 > --------------------
 > 
 > gcc -v:  gcc version 4.5.2 (Debian 4.5.2-11) 

This bit looks incomplete.  'gcc -v' normally includes a list of
configuration options, that sometimes do matter.  Of course, Debian
should know what "4.5.2-11" means exactly, so it may not matter.
It would matter for bug reports to FSF GCC.

Apart from that, the bug report looks complete.

 > 
 > uname -a: Linux contorpis.corelatus.se 2.6.38-2-amd64 #1 SMP Thu Apr 7 04:28:07 UTC 2011 x86_64 GNU/Linux
 > 
 > how to reproduce:
 > 
 >    cd /tmp
 >    wget www.corelatus.se/~matthias/preprocessed.i
 >    gcc -O3 -c preprocessed.i
 > 
 > here's what it looks like on my machine:
 > 
 >   >   gcc -O3 -c preprocessed.i
 >   beam/dist.c: In function ‘erts_do_net_exits’:
 >   beam/dist.c:501:1: internal compiler error: in dfs_enumerate_from, at cfganal.c:1207
 >   Please submit a full bug report,
 >   with preprocessed source if appropriate.
 >   See <file:///usr/share/doc/gcc-4.5/README.Bugs> for instructions.
 > 
 > MD5: 616c74a08f57cb9263a9af62d845fb19  preprocessed.i
 > 
 > Problem does not occur with "gcc version 4.4.5 (Debian 4.4.5-15)"
 > 
 > Can't find a similar problem at bugs.debian.org.
 > Similar problem: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48000
 > 
 > Matt




 >