I get now an ICE compiling glibc. The error is in 20041014 but also in
20041013 and has been introduced during the last 5 days or so (or glibc
has changed in a way to trigger this).
[EMAIL PROTECTED]:/cvs/libc/stdlib>
/opt/gcc/4.0-devel/libexec/gcc/x86_64-suse-linux-gnu/4.0.0/cc1-fpreprocessed
tst-random.i -quiet -dumpbase tst-random.c -mtune=k8
-auxbase-strip /builds/glibc/4.0/stdlib/tst-random.o -O2 -std=gnu99 -version
-o tst-random.s
GNU C version 4.0.0 20041014 (experimental) (x86_64-suse-linux-gnu)
compiled by GNU C version 4.0.0 20041014 (experimental).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
tst-random.i: In function 'main':
tst-random.i:2738: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
Running under gdb shows:
(gdb) r -fpreprocessed tst-random.i -quiet -dumpbase tst-random.c -mtune=k8
-auxbase-strip/builds/glibc/4.0/stdlib/tst-random.o -O2 -std=gnu99 -version -o
tst-random.s
GNU C version 4.0.0 20041014 (experimental) (x86_64-suse-linux-gnu)
compiled by GNU C version 4.0.0 20041014 (experimental).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Program received signal SIGSEGV, Segmentation fault.
0x00000000005b1b94 in fold (expr=0x2a95b67a50)
at /cvs/gcc/gcc/fold-const.c:6051
6051 STRIP_NOPS (op);
(gdb) bt
#0 0x00000000005b1b94 in fold (expr=0x2a95b67a50)
at /cvs/gcc/gcc/fold-const.c:6051
#1 0x00000000005cb832 in extract_muldiv (t=Variable "t" is not available.
) at /cvs/gcc/gcc/fold-const.c:5313
#2 0x00000000005b4655 in fold (expr=0x2a95b67a00)
at /cvs/gcc/gcc/fold-const.c:7571
#3 0x00000000007bb9d6 in analyze_array_indexes (loop=0xb79850,
access_fns=0xb78268, ref=Variable "ref" is not available.
)
at /cvs/gcc/gcc/tree-data-ref.c:519
#4 0x00000000007becdd in analyze_array (stmt=0x2a95b01d20, ref=0x2a95afabd0,
is_read=0 '\0') at /cvs/gcc/gcc/tree-data-ref.c:596
#5 0x00000000007bf069 in find_data_references_in_loop (loop=0xb79710,
datarefs=0x7fbfffe860) at /cvs/gcc/gcc/tree-data-ref.c:2236
#6 0x00000000004d70b6 in estimate_numbers_of_iterations (loops=0xb56d00)
at /cvs/gcc/gcc/tree-ssa-loop-niter.c:1005
#7 0x00000000004d5615 in tree_ssa_loop_bounds ()
at /cvs/gcc/gcc/tree-ssa-loop.c:308
#8 0x000000000047ca9d in execute_pass_list (pass=0xa8be60)
at /cvs/gcc/gcc/tree-optimize.c:503
#9 0x000000000047cb29 in execute_pass_list (pass=0xa8c100)
at /cvs/gcc/gcc/tree-optimize.c:539
#10 0x000000000047cb29 in execute_pass_list (pass=0xa87540)
at /cvs/gcc/gcc/tree-optimize.c:539
#11 0x000000000047cd6f in tree_rest_of_compilation (fndecl=0x2a95aff380)
at /cvs/gcc/gcc/tree-optimize.c:633
#12 0x000000000041a10b in c_expand_body (fndecl=0x2a95aff380)
at /cvs/gcc/gcc/c-decl.c:6370
#13 0x00000000007ae32e in cgraph_expand_function (node=0x2a95b100e0)
at /cvs/gcc/gcc/cgraphunit.c:1046
#14 0x00000000007b1c14 in cgraph_optimize () at /cvs/gcc/gcc/cgraphunit.c:2728
#15 0x000000000075bb55 in toplev_main (argc=Variable "argc" is not available.
) at /cvs/gcc/gcc/toplev.c:999
#16 0x0000002a9568900d in __libc_start_main () from /lib64/tls/libc.so.6
#17 0x00000000004023ca in _start () at start.S:113
(gdb) p expr
$1 = 0x2a95b67a50
(gdb) pge
(bit_size_type) iD.3284_20 * 1
(gdb) p op
$2 = 0x2a95af53c0
(gdb) pt op
<nop_expr 0x2a95af53c0
type <integer_type 0x2a95896460 bit_size_type public unsigned sizetype TI
size <integer_cst 0x2a958a7150 constant invariant 128>
unit size <integer_cst 0x2a958a7180 constant invariant 16>
align 128 symtab 0 alias set -1 precision 68 min <integer_cst
0x2a958a7900 0> max <integer_cst 0x2a958a7930 0xfffffffffffffffff>>
readonly
arg 0 <ssa_name 0x2a95b26780 nothrow var <var_decl 0x2a95b021c0 i> def_stmt
<ssa_name 0x2a95b26730>
version 20 in-free-list>>
--
Summary: ICE in fold-const.c/fold
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: aj at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: x86_64-linux-gnu
GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18005
