In stage2, the following fault occurs:
mv tmp-libgcc.mk libgcc.mk
./xgcc -B./ -B/home/dave/opt/gnu/gcc/gcc-4.1.0/hppa-linux/bin/ -isystem /home/da
ve/opt/gnu/gcc/gcc-4.1.0/hppa-linux/include -isystem /home/dave/opt/gnu/gcc/gcc-
4.1.0/hppa-linux/sys-include -L/home/dave/gnu/gcc-4.0/objdir/gcc/../ld -O2 -O2 -
g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-protot
ypes -Wold-style-definition -isystem ./include -I. -I. -I../../gcc/gcc -I../..
/gcc/gcc/. -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -g0 -f
inhibit-size-directive -fno-inline-functions -fno-exceptions -fno-zero-initializ
ed-in-bss -fno-unit-at-a-time \
-c ../../gcc/gcc/crtstuff.c -DCRT_BEGIN \
-o crtbegin.o
xgcc: Internal error: Segmentation fault (program cc1)
(gdb) r `cat xx.sh`
Starting program: /home/dave/gnu/gcc-4.0/objdir/gcc/cc1 `cat xx.sh`
GNU C version 4.1.0 20050814 (experimental) (hppa-linux)
compiled by GNU C version 4.1.0 20050814 (experimental).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
options passed: -I. -I. -I../../gcc/gcc -I../../gcc/gcc/.
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -iprefix
-isystem -DIN_GCC -DCRT_BEGIN -isystem -isystem -isystem -auxbase-strip -g
-g0 -O2 -O2 -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -finhibit-size-directive
-fno-inline-functions -fno-exceptions -fno-zero-initialized-in-bss
-fno-unit-at-a-time
options enabled: -falign-loops -fargument-alias -fbranch-count-reg
-fcaller-saves -fcommon -fcprop-registers -fcrossjumping
-fcse-follow-jumps -fcse-skip-blocks -fdefer-pop -fdelayed-branch
-fdelete-null-pointer-checks -fearly-inlining
-feliminate-unused-debug-types -fexpensive-optimizations -ffunction-cse
-fgcse -fgcse-lm -fguess-branch-probability -fident -fif-conversion
-fif-conversion2 -finhibit-size-directive -fipa-pure-const -fipa-reference
-fipa-type-escape -fivopts -fkeep-static-consts -fleading-underscore
-floop-optimize -floop-optimize2 -fmath-errno -fmerge-constants
-fomit-frame-pointer -foptimize-register-move -foptimize-sibling-calls
-fpeephole -fpeephole2 -freg-struct-return -fregmove -freorder-blocks
-freorder-functions -frerun-cse-after-loop -frerun-loop-opt
-fsched-interblock -fsched-spec -fsched-stalled-insns-dep -fschedule-insns
-fschedule-insns2 -fshow-column -fsplit-ivs-in-unroller -fstrength-reduce
-fstrict-aliasing -fthread-jumps -ftrapping-math -ftree-ccp -ftree-ch
-ftree-copy-prop -ftree-copyrename -ftree-dce -ftree-dominator-opts
-ftree-dse -ftree-fre -ftree-loop-im -ftree-loop-ivcanon
-ftree-loop-optimize -ftree-lrs -ftree-pre -ftree-salias -ftree-sink
-ftree-sra -ftree-store-ccp -ftree-store-copy-prop -ftree-ter -ftree-vrp
-fvar-tracking -mbig-switch -mgas -mno-space-regs
Compiler executable checksum: f95f669b69fe7f9c73b928e96fbc74e7
vprintf getchar getc_unlocked getchar_unlocked putchar fputc_unlocked
putc_unlocked putchar_unlocked getline feof_unlocked ferror_unlocked
__strcspn_c1
__strcspn_c2 __strcspn_c3 __strspn_c1 __strspn_c2 __strspn_c3 __strpbrk_c2
__strpbrk_c3 __strtok_r_1c __strsep_1c __strsep_2c __strsep_3c strtod strtol
strtoul strtof strtold strtoq strtouq strtoll strtoull atof atoi atol atoll
get_cie next_fde last_fde __do_global_dtors_aux
Program received signal SIGSEGV, Segmentation fault.
bitmap_and_compl_into (a=0x5999fc, b=Variable "b" is not available.
) at ../../gcc/gcc/bitmap.c:780
780 BITMAP_WORD cleared = a_elt->bits[ix] & b_elt->bits[ix];
(gdb) p/x $pc
$3 = 0x12fcd4
0x0012fcd4 <bitmap_and_compl_into+212>: ldw 18(,r20),r19
(gdb) p/x $r20
$2 = 0x4e1fe4
(gdb) x/x 0x4e1fe4
0x4e1fe4: Cannot access memory at address 0x4e1fe4
(gdb) bt
#0 bitmap_and_compl_into (a=0x5999fc, b=Variable "b" is not available.
) at ../../gcc/gcc/bitmap.c:780
#1 0x000c5540 in insert_phi_nodes_for (var=0x403e2898,
phi_insertion_points=0x5999fc, update_p=1 '\001')
at ../../gcc/gcc/tree-into-ssa.c:806
#2 0x000c6074 in insert_updated_phi_nodes_for (var=0x403e2898, dfs=0x80,
blocks=0x5998a4, update_flags=2) at ../../gcc/gcc/tree-into-ssa.c:2476
#3 0x000c9b84 in update_ssa (update_flags=128)
at ../../gcc/gcc/tree-into-ssa.c:2771
My first guess is that this loop has been miscompiled:
for (ix = BITMAP_ELEMENT_WORDS; ix--;)
{
BITMAP_WORD cleared = a_elt->bits[ix] & b_elt->bits[ix];
BITMAP_WORD r = a_elt->bits[ix] ^ cleared;
a_elt->bits[ix] = r;
changed |= cleared;
ior |= r;
}
In the call to bitmap_and_compl_into that fails, the loop iterates
94061 times before the SIGSEGV.
The last successful build was updated at Aug 13 01:18:00 UTC 2005.
--
Summary: ICE: SIGSEGV at bitmap.c:780
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: danglin at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: hppa-unknown-linux-gnu
GCC host triplet: hppa-unknown-linux-gnu
GCC target triplet: hppa-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23386
