------- Comment #24 from jakub at gcc dot gnu dot org 2006-11-14 09:29 ------- This change breaks bootstrap on x86_64-linux and i386-linux: /usr/src/gcc-4.1/obj/./gcc/xgcc -B/usr/src/gcc-4.1/obj/./gcc/ -B/usr/local/x86_64-unknown-linux-gnu/bin/ -B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem /usr/local/x86_64-unknown-linux-gnu/include -isystem /usr/local/x86_64-unknown-linux-gnu/sys-include -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../../gcc -I../../gcc/. -I../../gcc/../include -I../../gcc/../libcpp/include -m32 -fexceptions -fvisibility=hidden -DHIDE_EXPORTS -c ../../gcc/unwind-dw2.c -o libgcc/32/unwind-dw2.o ../../gcc/unwind-dw2.c: In function 'uw_install_context_1': ../../gcc/unwind-dw2.c:1334: error: unrecognizable insn: (insn:HI 159 44 160 4 (set (reg:SI 102) (unspec:SI [ (symbol_ref:SI ("dwarf_reg_size_table") [flags 0x2] <var_decl 0x2aaaab051210 dwarf_reg_size_table>) ] 1)) -1 (nil) (nil)) ../../gcc/unwind-dw2.c:1334: 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.
The problematic part is the make_tree addition. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28915