ICE: in bitmap_set_replace_value

[thorsten <fly_b747 at gmx dot de>]

Hello all,

> trying to compile bash-4.2 with the gcc-4.8-20130106 snapshot I get the following error:
>
>  gcc  -DPROGRAM='"bash"' -DCONF_HOSTTYPE='"i686"' -DCONF_OSTYPE='"linux-gnu"' -DCONF_MACHTYPE='"i686-pc-linux-gnu"' -DCONF_VENDOR='"pc"' -DLOCALEDIR='"/usr/share/locale"' -DPACKAGE='"bash"' -DSHELL -DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib   -pipe -O2 -march=core2 -fomit-frame-pointer -c y.tab.c
> y.tab.c: In function 'yyparse':
> y.tab.c:1842:1: internal compiler error: in bitmap_set_replace_value, at tree-ssa-pre.c:867
>  yyparse (void)
>  ^
> libbacktrace could not find executable to open
> Please submit a full bug report,
> with preprocessed source if appropriate.

Executing the same command with -O1 instead of -O2 compiles just fine.

Also using the gcc-4.8-20121230 snapshot compiles just fine.

Is this a regression?

Thanks,

thorsten