Re: Solaris 8/SPARC bootstrap broken building 64-bit libgcc

["John David Anglin" <dave@hiauly1.hia.nrc.ca>]

> I have seen the same error but in a different place for the past two days:
> 
> stage1/xgcc -Bstage1/ -B/home/dave/opt/gnu/hppa-linux/bin/ -c   -gstabs -O2 -DIN
> _GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedant
> ic -Wno-long-long -Werror -fno-common   -DHAVE_CONFIG_H -DGENERATOR_FILE    -I.
> -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/config -I../../gcc/gcc/../
> include -I../intl ../../gcc/gcc/genautomata.c -o genautomata.o
> ../../gcc/gcc/genautomata.c: In function `automata_list_eq_p':
> ../../gcc/gcc/genautomata.c:4463: error: head insn 90 for block 0 not found in t
> he insn stream
> ../../gcc/gcc/genautomata.c:4463: internal compiler error: Segmentation fault

Zdenek's patch

  http://gcc.gnu.org/ml/gcc-patches/2003-07/msg00457.html

fixed the above failure.  However, there are still a bunch of new segmentation
faults in the testsuite.  For example,

Executing on host: /home/dave/gcc-3.4/objdir/gcc/xgcc -B/home/dave/gcc-3.4/objdi
r/gcc/   -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  -w -c
-o 20000728-1.o /home/dave/gcc-3.4/gcc/gcc/testsuite/gcc.c-torture/compile/20000
728-1.c    (timeout = 300)
/home/dave/gcc-3.4/gcc/gcc/testsuite/gcc.c-torture/compile/20000728-1.c: In func
tion `foo':
/home/dave/gcc-3.4/gcc/gcc/testsuite/gcc.c-torture/compile/20000728-1.c:15: inte
rnal compiler error: Segmentation fault

The stack backtrace is:

#0  0x000ec654 in verify_dominators (dom=0x486f58)
    at ../../gcc/gcc/dominance.c:695
#1  0x002f4bcc in unroll_and_peel_loops (loops=0x486e48, flags=4739680)
    at ../../gcc/gcc/loop-unroll.c:145
#2  0x0029b614 in rest_of_handle_loop2 (decl=0x486e48, insns=0x401d1ba0)
    at ../../gcc/gcc/toplev.c:3303
#3  0x0029bda4 in rest_of_compilation (decl=0x401d0a80)
    at ../../gcc/gcc/toplev.c:3576
#4  0x0003e438 in c_expand_body_1 (fndecl=0x401d0a80, nested_p=0)
    at ../../gcc/gcc/c-decl.c:6379
#5  0x002d4500 in cgraph_expand_function (node=0x40017340)
    at ../../gcc/gcc/cgraphunit.c:282
#6  0x002d46c8 in cgraph_expand_functions () at ../../gcc/gcc/cgraphunit.c:372
#7  0x002d49d0 in cgraph_optimize () at ../../gcc/gcc/cgraphunit.c:462
#8  0x0007dfe0 in c_objc_common_finish_file ()
    at ../../gcc/gcc/c-objc-common.c:363
#9  0x00019d3c in yyparse () at c-parse.y:339
#10 0x0006f398 in c_common_parse_file (set_yydebug=4732136)
    at ../../gcc/gcc/c-opts.c:1188
#11 0x00298e20 in compile_file () at ../../gcc/gcc/toplev.c:2069
#12 0x0029e3d0 in do_compile () at ../../gcc/gcc/toplev.c:4959
#13 0x0029e44c in toplev_main (argc=18, argv=0xfaf005b0)
    at ../../gcc/gcc/toplev.c:4990

It appears dom_bb is 0x0.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)