the fix for PR middle-end/28915 causes a bootstrap failure with 4.1 20061113 on i486 (using the Debian build); didn't yet check with a vanilla 4.1 branch or the fedora 4.1 branch.
Matthias ./xgcc -B./ -B/usr/i486-linux-gnu/bin/ -isystem /usr/i486-linux-gnu/include -isystem /usr/i486-linux-gnu/sys-include -L/home/packages/gcc/4.1/gcc-4.1-4.1.1ds2/build/gcc/../ld -O2 -O2 -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -I. -I. -I../../src/gcc -I../../src/gcc/. -I../../src/gcc/../include -I../../src/gcc/../libcpp/include -fexceptions -fvisibility=hidden -DHIDE_EXPORTS -c ../../src/gcc/unwind-dw2.c -o libgcc/./unwind-dw2.o ../../src/gcc/unwind-dw2.c: In function 'uw_install_context_1': ../../src/gcc/unwind-dw2.c:1357: error: unrecognizable insn: (insn:HI 157 44 158 4 (set (reg:SI 98) (unspec:SI [ (symbol_ref:SI ("dwarf_reg_size_table") [flags 0x2] <var_decl 0x4042e6c0 dwarf_reg_size_table>) ] 1)) -1 (nil) (nil)) ../../src/gcc/unwind-dw2.c:1357: internal compiler error: in extract_insn, at recog.c:2084 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. -- Summary: ICE in Product: gcc Version: 4.1.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: debian-gcc at lists dot debian dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29825