[Bug c/25742] Internal compiler error in gen_rtx_SUBREG

["zer0 at droids-corp dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #1 from zer0 at droids-corp dot org  2006-01-10 21:04 -------
Created an attachment (id=10609)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10609&action=view)
the guilty program

This is the program that we cannot compile :

$ avr-gcc -Wall -Os f32.c -c -mmcu=atmega128
f32.c: In function `f':
f32.c:71: warning: 'a' might be used uninitialized in this function
f32.c:71: warning: 'b' might be used uninitialized in this function
f32.c:73: internal compiler error: in gen_rtx_SUBREG, at emit-rtl.c:618
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

avr-gcc -v
Reading specs from /usr/lib/gcc/avr/3.4.3/specs
Configured with: ./configure -v --enable-languages=c,c++ --prefix=/usr
--infodir=/usr/share/info --mandir=/usr/share/man --enable-shared
--with-system-zlib --enable-long-long --enable-nls --without-included-gettext
--disable-checking --build=i386-linux --host=i386-linux --target=avr
Thread model: single
gcc version 3.4.3

Note that it compiles on my host :

$ gcc f32.c -c -Os
  -> ok
$ gcc-3.4 f32.c -c -Os
  -> ok


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25742