[Bug c/16652] New: [3.5 regression] memory corruption

["reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Since today I'm getting a bootstrap failure on i686-pc-linux-gnu with
mainline while building libiberty. The problem is hard to reproduce
since it vanishes if I use -save-temps :-(

However I built an example consisting of four files which only include
each other and consistently fail when I try to compile them with
the command "gcc -O2 -g -c regex.c".
The error then reads:

regex.c: In function `xre_comp':
regex.c:7751: internal compiler error: in avail_expr_eq, at tree-ssa-dom.c:3672
Please submit a full bug report, [etc.]

I suspect there's some memory corruption caused by the preprocessor
and the compiler trips over it later. But that's only a wild guess.

-- 
           Summary: [3.5 regression] memory corruption
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: critical
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16652