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irix6.5 bootstrap failure - SIGSEGV in gcc/reorg.c


irix6.5 bootstrap of current CVS dies with

/exd4/billingd/src/gcc-mainline/gcc/expr.c: In function `convert_move':
/exd4/billingd/src/gcc-mainline/gcc/expr.c:1255: Internal error: Bus error
Please submit a full bug report,

Running under gdb, I see

Program received signal SIGSEGV, Segmentation fault.
0x103fa62c in fix_reg_dead_note (start_insn=0x10c4f5c0,
stop_insn=0x10665d00)
    at /exd4/billingd/src/gcc-mainline/gcc/reorg.c:1969
1969            next = XEXP (link, 1);
(gdb) where
#0  0x103fa62c in fix_reg_dead_note (start_insn=0x10c4f5c0, 
    stop_insn=0x10665d00) at
/exd4/billingd/src/gcc-mainline/gcc/reorg.c:1969
#1  0x103fbd68 in fill_slots_from_thread (insn=0x10665d00, 
    condition=0x10b8bf60, thread=0x10593040, opposite_thread=0x105938c0, 
    likely=0, thread_if_true=1, own_thread=0, slots_to_fill=1, 
    pslots_filled=0x7ffed5b4, delay_list=0x0)
    at /exd4/billingd/src/gcc-mainline/gcc/reorg.c:2619
#2  0x103fcff8 in fill_eager_delay_slots ()
    at /exd4/billingd/src/gcc-mainline/gcc/reorg.c:2999
#3  0x103ff0ec in dbr_schedule (first=0x1052c5c0, file=0x0)
    at /exd4/billingd/src/gcc-mainline/gcc/reorg.c:3613



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