[Bug c++/47311] [C++0x] ICE in tsubst @cp/pt.c:10502

["pluto at agmk dot net" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47311

--- Comment #9 from Pawel Sikora <pluto at agmk dot net> 2011-01-16 01:10:32 UTC ---
without SSE2 vectorized lexer:

==2012== Invalid read of size 8
==2012==    at 0xB43064: search_line_acc_char (lex.c:263)
==2012==    by 0xB434FE: _cpp_clean_line (lex.c:669)
==2012==    by 0xB43F17: _cpp_get_fresh_line (lex.c:1888)
==2012==    by 0xB456FD: _cpp_lex_direct (lex.c:1953)
==2012==    by 0xB46576: _cpp_lex_token (lex.c:1827)
==2012==    by 0xB48BE7: cpp_get_token (macro.c:1240)
==2012==    by 0xB48E7F: cpp_get_token_with_location (macro.c:1352)
==2012==    by 0x4F9F82: c_lex_with_flags (c-lex.c:302)
==2012==    by 0x46382F: cp_lexer_get_preprocessor_token (parser.c:548)
==2012==    by 0x47CA22: c_parse_file (parser.c:425)
==2012==    by 0x4FDA74: c_common_parse_file (c-opts.c:1071)
==2012==    by 0x727973: toplev_main (toplev.c:579)
==2012==  Address 0x531cd00 is 160 bytes inside a block of size 163 alloc'd
==2012==    at 0x4C25322: realloc (vg_replace_malloc.c:525)
==2012==    by 0xB6D38C: xrealloc (xmalloc.c:179)
==2012==    by 0xB37F5F: _cpp_convert_input (charset.c:1734)
==2012==    by 0xB402F2: read_file (files.c:648)
==2012==    by 0xB4150A: _cpp_stack_file (files.c:723)
==2012==    by 0xB38D60: do_include_common (directives.c:792)
==2012==    by 0xB3A260: _cpp_handle_directive (directives.c:491)
==2012==    by 0xB46594: _cpp_lex_token (lex.c:1839)
==2012==    by 0xB48BE7: cpp_get_token (macro.c:1240)
==2012==    by 0xB48E7F: cpp_get_token_with_location (macro.c:1352)
==2012==    by 0x4F9F82: c_lex_with_flags (c-lex.c:302)
==2012==    by 0x46382F: cp_lexer_get_preprocessor_token (parser.c:548)
==2012==
==2012==
==2012== ---- Attach to debugger ? --- [Return/N/n/Y/y/C/c] ---- y
==2012== starting debugger with cmd: gdb --nw /proc/2013/fd/1014 2013
GNU gdb (GDB) PLD Linux (7.2-1)
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This GDB was configured as "x86_64-pld-linux".
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<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /proc/2013/fd/1014...done.
Attaching to program: /proc/2013/fd/1014, process 2013
Reading symbols from /usr/lib64/valgrind/vgpreload_core-amd64-linux.so...done.
Loaded symbols for /usr/lib64/valgrind/vgpreload_core-amd64-linux.so
Reading symbols from
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so...done.
Loaded symbols for /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so
Reading symbols from /lib64/libc.so.6...Reading symbols from
/usr/lib/debug/lib64/libc-2.12.2.so.debug...done.
done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from
/usr/lib/debug/lib64/ld-2.12.2.so.debug...done.
done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
0x0000000000b43064 in search_line_acc_char (s=<value optimized out>, end=<value
optimized out>) at ../../libcpp/lex.c:263
263           val = *++p;
(gdb) bt
#0  0x0000000000b43064 in search_line_acc_char (s=<value optimized out>,
end=<value optimized out>) at ../../libcpp/lex.c:263
#1  0x0000000000b434ff in _cpp_clean_line (pfile=0x521d260) at
../../libcpp/lex.c:669
#2  0x0000000000b43f18 in _cpp_get_fresh_line (pfile=0x521d260) at
../../libcpp/lex.c:1888
#3  0x0000000000b456fe in _cpp_lex_direct (pfile=0x521d260) at
../../libcpp/lex.c:1953
#4  0x0000000000b46577 in _cpp_lex_token (pfile=0x521d260) at
../../libcpp/lex.c:1827
#5  0x0000000000b48be8 in cpp_get_token (pfile=0x521d260) at
../../libcpp/macro.c:1240
#6  0x0000000000b48e80 in cpp_get_token_with_location (pfile=0x521d260,
loc=0x4141184) at ../../libcpp/macro.c:1352
#7  0x00000000004f9f83 in c_lex_with_flags (value=0x4141188, loc=0x4141184,
cpp_flags=0x4141182 "", lex_flags=2) at ../../gcc/c-family/c-lex.c:302
#8  0x0000000000463830 in cp_lexer_get_preprocessor_token (lexer=<value
optimized out>, token=0x4141180) at ../../gcc/cp/parser.c:548
#9  0x000000000047ca23 in cp_lexer_new_main () at ../../gcc/cp/parser.c:425
#10 cp_parser_new () at ../../gcc/cp/parser.c:3197
#11 c_parse_file () at ../../gcc/cp/parser.c:25275
#12 0x00000000004fda75 in c_common_parse_file () at
../../gcc/c-family/c-opts.c:1071
#13 0x0000000000727974 in compile_file (argc=62, argv=0x7fefff608) at
../../gcc/toplev.c:579
#14 do_compile (argc=62, argv=0x7fefff608) at ../../gcc/toplev.c:1874
#15 toplev_main (argc=62, argv=0x7fefff608) at ../../gcc/toplev.c:1937
#16 0x0000000004e48cbd in __libc_start_main (main=0x50bdb0 <main>, argc=62,
ubp_av=0x7fefff608, init=<value optimized out>, fini=<value optimized out>,
rtld_fini=<value optimized out>, stack_end=0x7fefff5f8) at libc-start.c:226
#17 0x0000000000402889 in _start () at ../sysdeps/x86_64/elf/start.S:113
(gdb) p p
$1 = (const word_type *) 0x531cd00
(gdb) l
258               int i = acc_char_index (t, val);
259               if (i >= 0)
260                 return (const uchar *)p + i;
261             }
262
263           val = *++p;
264         }
265     }