c/4493: gcc-3.0.1 compilation blows off with "Segmentation fault"

[sv at phystech dot com]

>Number:         4493
>Category:       c
>Synopsis:       gcc-3.0.1 compilation blows off with "Segmentation fault"
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Oct 06 18:46:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Sergei Viznyuk <sv@phystech.com>
>Release:        gcc-3.0.1
>Organization:
>Environment:
PIII 870MHz  392Mb RAM
>Description:
BOOT_CFLAGS="-O2 -march=i686 -fomit-frame-pointer" make bootstrap
fails with

./xgcc -B./ -B/usr/i686-pc-linux-gnu/bin/ -isystem /usr/i686-pc-linux-gnu/include -O2   -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -isystem ./include  -fPIC -g1  -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../gcc-3.0.1/gcc -I../../gcc-3.0.1/gcc/. -I../../gcc-3.0.1/gcc/config -I../../gcc-3.0.1/gcc/../include -fexceptions -c ../../gcc-3.0.1/gcc/unwind-dw2.c -o libgcc/./unwind-dw2.o
../../gcc-3.0.1/gcc/unwind-dw2.c: In function `extract_cie_info':
../../gcc-3.0.1/gcc/unwind-dw2.c:220: warning: implicit declaration of function `strlen'
../../gcc-3.0.1/gcc/unwind-dw2.c: In function `execute_stack_op':
../../gcc-3.0.1/gcc/unwind-dw2.c:303: warning: `result' might be used uninitialized in this function
../../gcc-3.0.1/gcc/unwind-dw2.c: In function `uw_frame_state_for':
../../gcc-3.0.1/gcc/unwind-dw2.c:889: warning: implicit declaration of function `memset'
../../gcc-3.0.1/gcc/unwind-dw2.c: In function `uw_install_context_1':
../../gcc-3.0.1/gcc/unwind-dw2.c:1167: warning: implicit declaration of function `memcpy'
../../gcc-3.0.1/gcc/unwind-dw2.c: At top level:
../../gcc-3.0.1/gcc/unwind-dw2.c:1187: Internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
make[3]: *** [libgcc/./unwind-dw2.o] Error 1
make[3]: Leaving directory `/usr/src/gcc/gcc'
make[2]: *** [libgcc.a] Error 2
make[2]: Leaving directory `/usr/src/gcc/gcc'
make[1]: *** [stage2_build] Error 2
make[1]: Leaving directory `/usr/src/gcc/gcc'
make: *** [bootstrap] Error 2
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: