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c/1578: mipsel-linux bootstrap fails in libgcc w/ current cvs
- To: gcc-gnats at gcc dot gnu dot org
- Subject: c/1578: mipsel-linux bootstrap fails in libgcc w/ current cvs
- From: "Brian R. Gaeke" <brg at sartre dot dgate dot ORG>
- Date: Sun, 7 Jan 2001 00:28:04 -0800
- Cc: brg at sartre dot dgate dot ORG
>Number: 1578
>Category: c
>Synopsis: mipsel-linux bootstrap fails in libgcc w/ current cvs
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Sun Jan 07 00:36:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Brian R. Gaeke
>Release: 2.97 20010106 (experimental)
>Organization:
the VMIPS project
>Environment:
System: Linux celes.dgate.ORG 2.2.14-5.0.14smp #1 SMP Sun Mar 26 13:03:52 PST 2000 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: mipsel-unknown-linux-gnu
configured with: ../gcc-20010107/configure --prefix=/usr/local/mipsel-linux --enable-shared --with-gnu-as --with-gnu-ld --enable-version-specific-runtime-libs --target=mipsel-linux
>Description:
Current CVS gcc segfaults on i686-pc-linux-gnu while compiling libgcc2.c
for target mipsel-unknown-linux-gnu. I suspect, but I can't prove,
that this is the same as bug c/1577.
Here is what was running:
/usr/build/gcc-20010107/build/gcc/xgcc
-B/usr/build/gcc-20010107/build/gcc/
-B/usr/local/mipsel-linux/mipsel-linux/bin/
-B/usr/local/mipsel-linux/mipsel-linux/lib/ -isystem
/usr/local/mipsel-linux/mipsel-linux/include -O2 -DCROSS_COMPILE -DIN_GCC
-W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -isystem
./include -Dinhibit_libc -g1 -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED
-Dinhibit_libc -I. -I. -I../../gcc -I../../gcc/. -I../../gcc/config
-I../../gcc/../include -DL_divdi3 -c ../../gcc/libgcc2.c -o
libgcc/./_divdi3.o
which ran
/usr/build/gcc-20010107/build/gcc/cc1 -fpreprocessed libgcc2.i -quiet
-dumpbase libgcc2.c -g1 -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -o libgcc2.s
It produced the error:
../../gcc/libgcc2.c: In function `__divdi3':
../../gcc/libgcc2.c:748: Internal error: Segmentation fault.
Please submit a full bug report.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
Here is a backtrace in cc1:
(gdb) info program
Using the running image of child Pid 5677.
Program stopped at 0x8116609.
It stopped with signal SIGSEGV, Segmentation fault.
(gdb) where
#0 find_reg_note (insn=0x0, kind=REG_LABEL, datum=0x0)
at ../../gcc/rtlanal.c:1507
#1 0x81f5aa0 in is_cfg_nonregular () at ../../gcc/sched-rgn.c:354
#2 0x81f9a4c in init_regions () at ../../gcc/sched-rgn.c:2961
#3 0x81f9b93 in schedule_insns (dump_file=0x0) at ../../gcc/sched-rgn.c:3046
#4 0x808ad6f in rest_of_compilation (decl=0x401a7f80)
at ../../gcc/toplev.c:3383
#5 0x805e525 in c_expand_body (fndecl=0x401a7f80, nested_p=0)
at ../../gcc/c-decl.c:6699
#6 0x805e33d in finish_function (nested=0) at ../../gcc/c-decl.c:6620
#7 0x804a1dd in yyparse_1 () at c-parse.y:323
#8 0x804e760 in yyparse () at ../../gcc/c-lex.c:154
#9 0x8089a4c in compile_file (name=0x82bebb3 "libgcc2.i")
at ../../gcc/toplev.c:2373
#10 0x808d1cc in main (argc=16, argv=0xbffff9b4) at ../../gcc/toplev.c:4869
#11 0x400359cb in __libc_start_main (main=0x808cb74 <main>, argc=16,
argv=0xbffff9b4, init=0x8049184 <_init>, fini=0x81fb78c <_fini>,
rtld_fini=0x4000ae60 <_dl_fini>, stack_end=0xbffff9ac)
at ../sysdeps/generic/libc-start.c:92
>How-To-Repeat:
I used the "configure" line above on a freshly checked-out
copy of the gcc sources, and then used
make cross MAKE='make TARGET_LIBGCC2_CFLAGS=-Dinhibit_libc'
to make.
Here is the .i file, though I suspect it's fairly easy to regenerate.
begin 644 libgcc2.i.bz2
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M2AA*8",$2,$@!0E"U*"+`*G3Q(>XPX^0W55\AV()RQAA)(5V6^2=J=\'CT`'
MM2E-="R-_%''X`'PC(UVBK\:3Q1CYIH#SH.73T7*IWC0AWC@I,PWJ5T)'<4.
MT,B+#:@'?Y&8GF;C'#V_??Z4D]_T/%&^Y:)?*W'X=;#D/P837BEFKB=CPA&0
M%B):X7@;<-=N&09(<]MI)8<M:QBH9?38JBU%WJDA7+4JP$02>UU*)%`WW#S9
M^RT>YR"H(7H14@&7I/3IWV"S7'NNH(T[Y!H@;*X_&?>$\"J/N#M#Y$B,;9`/
?A0%*O32]+L+"Y@S$80]]KX6%*?_%W)%.%"0-N3#W@```
`
end
>Fix:
I wouldn't know where to start to fix this bug, but making sure that
the insn passed to find_reg_note is not null is probably a good start.
>Release-Note:
>Audit-Trail:
>Unformatted: