Your last change to expr.c broke bootstrap on ia64:

Starting program: /tmp/cvs/gcc-20020831/Build/gcc/stage1/cc1 -quiet -v -I. -I. -I../../gcc -I../../gcc/. -I../../gcc/config -I../../gcc/../include -iprefix stage1/../lib/gcc-lib/ia64-suse-linux/3.3/ -isystem include -isystem stage1/include -isystem /usr/local/ia64-suse-linux/bin/include -D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=0 -D__gnu_linux__ -D__linux -D__linux__ -D_LONGLONG -Dlinux -Dunix -D__gnu_linux__ -D__linux -D__linux__ -D_LONGLONG -D__linux__ -D__unix__ -D__linux -D__unix -Asystem=linux -Acpu=ia64 -Amachine=ia64 -D__ia64 -D__ia64__ -D_LP64 -D__LP64__ -D__ELF__ -DIN_GCC -DHAVE_CONFIG_H ../../gcc/resource.c -quiet -dumpbase resource.c -auxbase-strip resource.o -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long -version -fno-common
ignoring nonexistent directory "stage1/include"
ignoring nonexistent directory "/usr/local/ia64-suse-linux/bin/include"
GNU C version 3.3 20020831 (experimental) (ia64-suse-linux)
        compiled by GNU C version 3.1.1 20020715 (prerelease) (SuSE Linux).
ignoring nonexistent directory "lib/gcc-lib/ia64-suse-linux/3.3/include"
ignoring nonexistent directory "lib/gcc-lib/ia64-suse-linux/3.3/../../../../ia64-suse-linux/include"
ignoring nonexistent directory "NONE/include"
ignoring nonexistent directory "/usr/local/lib/gcc-lib/ia64-suse-linux/3.3/include"
ignoring nonexistent directory "/usr/local/ia64-suse-linux/include"
ignoring duplicate directory "."
ignoring duplicate directory "../../gcc"
#include "..." search starts here:
#include <...> search starts here:
 .
 ../../gcc
 ../../gcc/config
 ../../include
 include
 /usr/local/include
 /usr/include
End of search list.

Program received signal SIGSEGV, Segmentation fault.
block_move_libcall_safe_for_call_parm () at ../../gcc/expr.c:1781
1781                      = TYPE_MODE (TREE_TYPE (TREE_VALUE (arg)));
(gdb) l 
1776
1777                arg = TYPE_ARG_TYPES (TREE_TYPE (fn));
1778                for ( ; arg != void_list_node ; arg = TREE_CHAIN (arg))
1779                  {
1780                    enum machine_mode mode
1781                      = TYPE_MODE (TREE_TYPE (TREE_VALUE (arg)));
1782                    rtx tmp = FUNCTION_ARG (args_so_far, mode, NULL_TREE, 1);
1783                    if (!tmp || !REG_P (tmp))
1784                      goto fail_takes_regs;
1785    #ifdef FUNCTION_ARG_PARTIAL_NREGS
(gdb) p arg
$1 = (union tree_node *) 0x2000000000586250
(gdb) pt
 <tree_list 0x2000000000586250
    value <integer_type 0x20000000002dabc0 long unsigned int unsigned sizetype DI
        size <integer_cst 0x20000000002d06c0 constant 64>
        unit size <integer_cst 0x20000000002d0810 constant 8>
        align 64 symtab 1861024 alias set -1 precision 64 min <integer_cst 0x20000000002d08a0 0> max <integer_cst 0x20000000002d08d0 18446744073709551615>>
    chain <tree_list 0x20000000002d3630
        value <void_type 0x20000000002db100 void asm_written VOID
            align 8 symtab 0 alias set -1
            pointer_to_this <pointer_type 0x20000000002db1e0>>>>
(gdb) p $.list.value
$2 = (union tree_node *) 0x20000000002dabc0
(gdb) pt
 <integer_type 0x20000000002dabc0 long unsigned int unsigned sizetype DI
    size <integer_cst 0x20000000002d06c0 type <integer_type 0x20000000002daca0 bit_size_type> constant 64>
    unit size <integer_cst 0x20000000002d0810 type <integer_type 0x20000000002dabc0 long unsigned int> constant 8>
    align 64 symtab 1861024 alias set -1 precision 64 min <integer_cst 0x20000000002d08a0 0> max <integer_cst 0x20000000002d08d0 18446744073709551615>>
(gdb) p $.common.type
$3 = (union tree_node *) 0x0

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."